12-17-2016 21:00; PM2.5; 381.0; 421; Hazardous (at 24-hour exposure at this level)
5:14 AM - 17 Dec 2016
0 replies
2 retweets
0 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.