Merry Christmas, Beijing. :-P RT @BeijingAir 12-24-2013 12:00 to 12-25-2013 11:59; PM2.5 24hr avg; 296.7; 347; Hazardous
12-24-2013 12:00 to 12-25-2013 11:59; PM2.5 24hr avg; 296.7; 347; Hazardous
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