#Wildfire smoke is impacting large portions of the Eastern United States. Check the Fire and Smoke Map, available in Spanish and English, to find your local air quality and steps you can take to protect your health. airnow.gov/wildfires/
EPAair

@EPAair
News, links, tips, and conversation from the U.S. Environmental Protection Agency Office of Air and Radiation. Neither RT nor imply endorsement.
EPAair’s Tweets
Today, @GinaEPA and jointly finalized greenhouse gas standards for medium and heavy duty vehicles:
This Air Quality Awareness Week, prepare for #wildfire season by considering a portable air cleaner to reduce smoke particles indoors. If portable air cleaners aren't available or affordable, DIY air cleaners can help reduce indoor #WildfireSmoke #AQAW2023 epa.gov/indoor-air-qua
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What is a MERV 13-rated filter?
#DidYouKnow Dr. Chien-Shiung Wu was the first woman hired as faculty in the Physics Dept at Princeton -- and first to receive equal pay? Her research included improving Geiger counters for the detection of radiation. #WomeninRadiation epa.gov/radtown/women-
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👍 Vehicle GHG emissions are going down while fuel economy is going up. A win/win for drivers and the Earth: epa.gov/newsreleases/a
Climate change has shifted the timing of natural phenomena that follow seasonal patterns, including spring snowmelt, wildfire and growing seasons, and more. See 's new report: epa.gov/climate-indica #climatechange
It’s Air Quality Awareness Week 2023! Learn about how climate change is increasing human exposure to dust, smoke, and pollen at epa.gov/climateimpacts. #AQAW2023
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We post about #ClimateChange indicators a lot... but what IS an indicator? An indicator is the long-term observation of changes in the 📆 timing of seasonal conditions and events -- observation that indicates climate change is happening now. Learn more: epa.gov/climate-indica
🌎 Today’s Air Quality Awareness Week topic is Air Quality & Climate. #ClimateChange can affect air quality, and certain air pollutants can affect climate change. Learn how climate impacts air quality and how EPA works to address climate change! epa.gov/air-quality/ai #AQAW2023
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What does climate change look like in the US? See Climate Change Indicators in the US, 2016: epa.gov/climate-indica
#MontrealProtocol turns 30 this year! Celebrate its success protecting the ozone layer. epa.gov/ozone-layer-pr
Reduce your exposure to #WildfireSmoke by staying inside with windows and doors closed and avoiding activities that create more particles indoors such as smoking, using gas or wood stoves, and frying or broiling food.
May 1-5 is Air Quality Awareness Week, coinciding with the start of ozone season, wildfire season, and World Asthma Day. Learn how climate change is affecting #AirQuality through wildfire, droughts, and dust at epa.gov/climateimpacts #AQAW2023
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EPA has many partnership programs that encourage #climatechange solutions like green power, energy efficiency, reduction of greenhouse-gas emissions, and more. Explore 's Climate Change site: epa.gov/climate-change
Our proposed standards for passenger vehicles will make the U.S. a leader in zero-emission vehicle technology & manufacturing.
Consumer benefits include:
✅ Cleaner air and improved health
✅ Less $ in fuel costs
✅ Less vehicle maintenance and lower repair costs
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3 states, 9 projects, nearly $30 million -- See how Utah, California, and Alaska are working to reduce smog and soot with our Targeted Airshed Grants. epa.gov/newsreleases/e
We have tons of great air quality data: epa.gov/air-trends And GHG emissions data: epa.gov/ghgreporting
🌎 With #EarthDay2022 coming up, it’s time to brush up on the science of #climatechange—including the basics, causes, impacts, and indicators. See ’s #ClimateScience site: epa.gov/climatechange-
🕵️ Today’s Air Quality Awareness Week topic is Participatory Science. Anyone can participate in air quality science, including you! Explore EPA’s participatory science resources during #AQAW2023 to learn how you can get involved. epa.gov/air-quality/ai
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$20 million in grant funding for enhanced air monitoring! Learn more about EPA’s Enhanced Air Quality Monitoring for Communities Grant Competition by joining our informational webinar tomorrow 1/11/22 at 1pm EST.
Did you know? The national average fine particle pollution (PM2.5) concentrations are near historic lows, mainly due to continued reductions in sulfur dioxide (SO2) and nitrogen oxides (NOx) emissions! gispub.epa.gov/air/trendsrepo
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2015 was the warmest year on record worldwide. More in our #ClimateChange Indicators Report: www3.epa.gov/climatechange/
The benefits from today's CSAPR Update are estimated up to $880 million annually: epa.gov/airmarkets/fin
Learn about climate-related health impacts on Indigenous communities during Native American Heritage Month #NAMH at 's #ClimateChange website: epa.gov/climate-change
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DYK #wildfire smoke can impact the air we breathe indoors? Learn about strategies to reduce smoke particles indoors and protect your health at
Are you prepared for #wildfire season? Learn how to protect the air quality in your home before, during, and after wildfires and power outages at ’s Spanish webinar on July 26 at 1:00 PM (ET). register.gotowebinar.com/register/76767
May is #MentalHealthAwareness Month. Natural disasters such as wildfires are becoming more common due to #ClimateChange, impacting the mental health of first responders. Learn more about climate change and human health at: epa.gov/climateimpacts
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The peak bloom date for D.C.'s Yoshino cherry trees is occurring about seven days earlier than it did in 1921. While the National Cherry Blossom Festival continues to lengthen, it has sometimes missed early peak bloom dates entirely. Learn more: epa.gov/climate-indica
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Did you know combined emissions of common pollutants have dropped 78% in the last 50 years? Stay on-trend by exploring our 2023 Air Trends report! gispub.epa.gov/air/trendsrepo
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🚦 Green light means go to epa.gov/cleanschoolbus right now! 's Clean School Bus program helps schools replace their diesel buses with electric ones. Applications are being accepted now through August 19th.
Lobster populations have shifted 106 miles north since 1968 as waters have warmed: go.usa.gov/xaXFd
Smoke from #wildfires continues to impact air quality in the Midwest and Eastern U.S. Check the Fire and Smoke Map, available in Spanish and English, to find local air quality information and steps you can take to protect your health. airnow.gov/wildfires/
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👏 It’s Air Quality Awareness Week! We are kicking off #AQAW23 focusing on the topic of Wildfires and Smoke. Smoke from wildfires negatively affects air quality. Learn how you can protect yourself and your loved ones from wildfire smoke risk at: epa.gov/air-quality/ai
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. is extending the deadline for community-focused air quality monitoring grant applications. New deadline: March 25, 2022, 11:59 PM EST. Learn more at:
Let’s celebrate 30 years of #MontrealProtocol healing the ozone layer and protecting us from harmful UV radiation.
📢 EPA’s new report explores health impacts of #ClimateChange on children across the U.S. Learn about the effects of extreme heat, air quality, changing seasons, flooding, and infectious diseases on children at: epa.gov/cira/climate-c
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We want to hear from you! EPA is seeking input - through Nov 2 - on the design of a new grant program for Wildfire Smoke Preparedness in Community Buildings. Learn more: epa.gov/indoor-air-qua
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DYK pollen and outdoor air pollution can trigger asthma symptoms? You can check on your local air pollution at airnow.gov and use this tool to plan outdoor activities when the air is cleaner. #BreatheEasier
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A portable air cleaner can help reduce smoke particles indoors during a #wildfire. If portable air cleaners are not available or affordable, you can learn more about making DIY air cleaners to reduce smoke indoors.
Public hearings on the proposal to repeal the Clean Power Plan will begin at 9:00AM ET today, 11/28/17, and tomorrow, 11/29/17, at the Capitol in Charleston, West Virginia. Watch the hearings live. wvlegislature.gov/live.cfm
Learn about how #ClimateChange is affecting the energy sector, including 💧⚡ hydropower generation in the West at: epa.gov/climateimpacts
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🧵Happy World Ozone Day! #DYK that the gases in your hairspray used to deplete the ozone layer? Thanks to the #MontrealProtocol phasing out ozone-depleting substances worldwide, you can style away 💁♀️ knowing your hairspray is not harming the #OzoneLayer.
We’re so excited, and we just can’t hide it! Air Quality Awareness Week is next week! Celebrate #AQAW2023 with us by checking out our daily topics and reading about how EPA is working to protect air quality and public health:
Want to reduce 🔽 your carbon footprint 👣? Consider riding the bus 🚌 to work or school when possible, or make other smart decisions about how you 🚲🛴🚶♂️🚘 get around. See ’s #WhatYouCanDo about #climatechange. epa.gov/climate-change.
The Greenhouse Gas Equivalencies Calculator—’s most popular tool!—has been updated with fresh data, a new interface, and one new equivalency. Available in both English and Spanish.
EPA wants to hear from you! Share your thoughts as we develop the #Methane Emissions Reduction Program, which will provide financial & technical assistance to reduce methane emissions from the oil & gas sector. Register for a public listening session: epa.gov/inflation-redu
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When it comes to climate change scientists, it’s difficult to find a more impressive resume than that of Dr. Warren Washington. #BlackHistoryMonth
🚗 Today’s Air Quality Awareness Week topic is Air Quality & Transportation. Air pollution from transportation contributes to poor air quality and negatively impacts public health. Learn about EPA’s clean transportation tools and resources! #AQAW2023 epa.gov/air-quality/ai
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🚴Happy National #BiketoWorkWeek! #DYK riding your bike to work rather than driving can cut down on your household emissions by at least 6%? And that’s just 1/19 of the ways biking to work makes your world a better place.
At we know reducing traffic-related air pollution around schools is important to the health of children. Read our released updated best practices and case studies of practices in action this #ChildrensHealthMonth.
#DYK temperatures in urban areas can be higher than in outlying areas? That means greater susceptibility to heat stroke for city residents. Learn how green roofs, cool pavements, and other actions can reduce the heat island effect. #NationalHeatSafetyWeek epa.gov/heatislands
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⛵ Out on the water this summer? Keep in mind that #climatechange affects the ocean, rivers, streams, and more. Learning about climate change is an important step toward protecting these natural resources. Visit 's Climate Change Indicators: epa.gov/climate-indica
Changes in the Earth’s 🌎 climate can affect ecosystems by altering the water cycle, habitats, animal behavior—such as nesting and migration patterns—and the timing of natural processes such as flower blooms. Learn more at 's Indicators site: epa.gov/climate-indica
As the Earth’s climate warms, hotter-than-usual days and nights are becoming more common and heat waves more frequent and intense. Outdoor workers and other vulnerable groups should take extra precautions. #NationalHeatSafetyWeek epa.gov/climate-indica
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Hazy memory of the 70s & 80s? Blame some of it on the smog; air pollution has improved 70%: gispub.epa.gov/air/trendsrepo
✅ Know your asthma triggers! Indoor allergens and irritants play a significant role in causing, triggering, or exacerbating asthma symptoms. #AsthmaAwarenessMonth #AQAW2023 epa.gov/air-quality/ai
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Indigenous communities, such as those in the Arctic, are affected by #ClimateChange impacts that threaten food sources, human health, infrastructure, and cultural practices. #NAHM Find out more on 's Climate Change website: epa.gov/climate-change
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In March 2022, old sea ice crumbled away as new ice formed off the coast of Antarctica’s Marie Byrd Land. earthobservatory.nasa.gov/images/149650/
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As concentrations of #carbondioxide in the atmosphere rise 🔺, the ocean in turn absorbs more carbon dioxide. This results in higher ocean acidity, which makes it difficult for corals, some types of plankton, and other creatures to thrive. Find out more: epa.gov/climate-indica
Since 2011, vehicle GHG emission standards have slashed almost 130 million metric tons of CO2: epa.gov/newsreleases/a
Today’s ACE Rule could reduce power sector CO2 emissions to 34% below 2005 levels by 2030, while providing regulatory certainty and flexibility to states. epa.gov/stationary-sou
🌊 Global average sea level rose throughout the 20th century, and the rate of change is accelerating. Learn how rising sea level can affect coastal ecosystems, infrastructure, and people at 's #ClimateChange Indicators: epa.gov/climate-indica
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#NationalOceanMonth is the perfect time to learn about the impacts of #climatechange, including increasing ocean acidity. Explore ’s Climate Indicators: epa.gov/climate-indica
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Our ocean's health is at a tipping point as issues like ocean acidification worsen.
Life is getting increasingly difficult for creatures like shellfish, but a @NASA satellite is helping scientists track the trend from space. Full story: earth.jpl.nasa.gov/news/28/how-is #WorldOceansDay
Do not use portable generators near where you or your children are sleeping. Use portable generators OUTSIDE and far away from buildings. #HurricaneFlorence
🥵 When humidity is high, water doesn't evaporate as easily, so it's harder to cool off by sweating. That is why health warnings about extreme heat are often based on the “heat index,” which combines temperature and humidity. #NationalHeatSafetyWeek
The Air Quality Flag Program helps teachers and schools protect kids’ health: airnow.gov/flag #AmericanEducationWeek
❓❓ Want to check out your knowledge of #climatechange? Take 's Climate Change Quiz! epa.gov/climate-change
Proposals now being accepted for clean school bus projects! Reduce diesel emissions through our DERA program. epa.gov/cleandiesel/cl
Join us for a Twitter chat on #WildfireSmoke and health at 1:30 p.m. EDT Monday, Aug. 22. Learn more: blog.epa.gov/blog/2016/08/l.
What has two wheels and can move folks toward lower carbon emissions? A bicycle! 🚲
National Bike to Work Day is tomorrow, and you can celebrate by using your local bikeshare or dusting off the ol’ 10-speed (handlebar streamers optional)!
#Radon kills about 21,000 people each year and is the leading cause of lung cancer in non-smokers. This #NationalRadonActionMonth, learn how to take action and #TestYourNest: epa.gov/radon
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We’re gratified the Senate ratified! Adopting the Kigali Amendment is another critical step in the U.S.’s commitment to phasing down climate-damaging HFCs. Learn more about #Kigali’s importance at epa.gov/ozone-layer-pr.
🌸 As #climate changes / even the 🌸 #CherryBlossoms / hurry toward Spring. 🌸 See ’s #ClimateChangeIndicators at epa.gov/climate-indica
Smog is more prevalent in summer. Check your air quality if planning outdoor activities: airnow.gov.
Looking for real-time air quality information on your phone? Download the free (and ad-free!) AirNow app to know air quality conditions in your area. airnow.gov/wildfires/
📣 New climate resource: Visit EPA’s #ClimateChange Impacts by Sector website at epa.gov/climateimpacts and keep an eye out for more Tweets about how climate change affects the environment, human health, and livelihoods.
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Did you know that particulate matter (PM) can impact indoor air quality (IAQ) and health, and that many sources of PM can be found indoors? Visit EPA’s new Sources of Indoor PM webpage to learn about indoor PM sources and strategies to improve IAQ. epa.gov/node/277521
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About 21,000 Americans die every year due to radon exposure – deaths that are largely preventable. Now is the time for action. Test. Fix. Save a Life. #nationalradonactionmonth
🌀 The Atlantic #hurricane season is here. A hurricane's rains and high winds can cause severe property damage, loss of life, flooding, and more. Learn about the frequency, intensity, and duration of Atlantic hurricanes at 's Climate Indicators site: epa.gov/climate-indica
We are thrilled to announce this year's Direct Project Engagement winners are , , , , , and . Thanks for your commitment to the Green Power Partnership! #GreenPowerLeadershipAwards
Heat waves are occurring more often than they used to in major cities across the United States. Their frequency has increased from an average of two per year during the 1960s to six per year during the 2010s and 2020s. See 's Climate Indicators: epa.gov/climate-indica
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Exposure to #radon and smoking can be a deadly combination. This Lung Cancer Awareness Month, reduce your risk of lung cancer: test your home for radon today. #TestFixSaveALife
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Did you know we at EPA assist during radiological emergencies? In the event of a radiological emergency, you should get inside, stay inside, and stay tuned. Learn how to protect yourself from #radiation
Check out the latest 2018 power sector emission data on ’s Power Plant Emission Trends page. epa.gov/airmarkets/pow
Did you know school buses can now run fossil fuel free? 🚍🔌⚡
’s Clean School Bus Rebates program is leading the transition to zero- and low-emission buses!
Sign up for the newsletter to receive all the latest updates before the 8/19 deadline: epa.gov/cleanschoolbus
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Be #SmokeReady! Get to know your heating, ventilation, and air conditioning (HVAC) system – if you have a fresh air intake, find out how to close it or set it to “recirculate” to keep smoke out of your indoor air.
The new Clean School Bus Program will offer $5 billion over five years to replace older school buses with clean school buses that are zero-emission or use alternative fuels. Is your community or organization eligible? Lean more at:
Radiation is all around us, all of the time, mostly from natural sources. To learn more about #radiation, check out our page.
#Wildfire smoke is currently affecting communities across much of the Eastern U.S., reducing air quality and impacting people’s health. Learn about the wildfire-climate connection: epa.gov/climate-indica
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. just released the annual Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2020, which provides the latest information on current and historical national trends in GHG emissions. To explore the report and data visit: epa.gov/ghgemissions/i
What are the impacts of climate change where you live? Use our clickable map to explore: www3.epa.gov/climatechange/
Remember acid rain? The Clean Air Act's Acid Rain Program has made a huge difference: 65% ↓ in acid rain since 1990. epa.gov/airmarkets/pro
From 1948-2020, growing degree days, a measure for tracking plant growth, have increased about 9% in the contiguous U.S., suggesting longer pollen seasons. Pollen can cause allergies and asthma, which cost tens of billions of dollars to treat annually. epa.gov/climate-indica
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