Wednesday, August 13, 2014

PM2.5 Forecast for Beijing – Wednesday, August 13, 2014

We're on the march back toward average air quality on Wednesday so, although we could see better than average AQI levels for a few more hours, we should end up at Unhealthy readings before the day is over. 


THURSDAY, August 14:  We should be back to average conditions on Thursday:  Unhealthy AQI readings should be the order for the day.

FRIDAY, August 15:  Friday should keep us at Unhealthy conditions, still average for this time of year.

SATURDAY, August 16:  There is a slight chance of improved air quality in the morning, but the most likely scenario is average, Unhealthy conditions throughout the day. 


  1. Where do you get the source data for your forecasts? I think that should be made clear somewhere on this blog...

  2. Thanks for your comment. The source data is a couple of weather forecasts available on public websites like We have analyzed the last several years of weather and pollution data for Beijing and have established some correlation between weather and pollution levels. Based on our understanding of the relationship between weather and pollution, we look at the weather forecast for the upcoming several days and make a prediction of the corresponding pollution levels. It's an imprecise correlation between surface conditions and pollution levels, but it's the best method we've found so far. And as far as we know, no one else is publishing forecasts like this. Hope you find it useful!!