11-19-2013 10:00; PM2.5; 22.0; 72; Moderate (at 24-hour exposure at this level)
6:15 PM - 18 Nov 2013
0 replies
0 retweets
1 like
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.