Make sure to have your 口罩 (mask) today! RT @BeijingAir 07-20-2012 13:00; PM2.5; 259.0; 309; Hazardous (at 24-hour exposure at this level)
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@GinnyTonkin yep, you can always check the air for the last 24 hours at http://beijingtravelreport.com/beijing-air-quality-data/ … Unhealthy this hour.
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