“@BeijingAir: 09-08-2014 13:00; PM2.5; 4.0; 17; Good (at 24-hour exposure at this level)” > Fine day to wash and sun-dry the smog masks!
09-08-2014 13:00; PM2.5; 4.0; 17; Good (at 24-hour exposure at this level)
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
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.