Monday was a roller coaster ride for air quality in Beijing, and Tuesday may be very similar. We're expecting increasing PM2.5 levels overnight, likely peaking around mid-morning. We could make it up into Hazardous at the peak, and almost certainly up into Very Unhealthy. From there we should see the air quality improve through the afternoon, but likely no lower than Unhealthy. Finally, we are likely to see increasing pollution again in the evening.
EXTENDED FORECAST
WEDNESDAY, April 2: We should see poor air quality overnight and early on Wednesday, but we have a good chance at seeing clearing skies between late morning and early afternoon on Wednesday. The forecast is not entirely clear at this point, but we could see the AQI drop down to Good or Moderate during the afternoon.
THURSDAY, April 3: After the AQI jumps back up overnight, we should see clearing skies again on Thursday, with the good air arriving between about 9AM and 2PM.
FRIDAY, April 4: The good air quality should continue on Friday. Although we might see elevated PM2.5 levels in the morning, we should see Good or Moderate air quality for the rest of the day.
UPDATE – Our prediction with overlay of actual readings:
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