We're expecting a lot of fast changes in air quality on Wednesday. Look for high PM2.5 levels after midnight, possibly dropping as low as Good./Moderate by the morning hours. Then in the afternoon, look for the pollution to accumulate again very quickly.
THURSDAY, February 13: We’re expecting poor air quality again on Thursday, although the current weather forecasts suggest the pollution will be about average for Beijing, somewhere in the Unhealthy range.
FRIDAY, February 14: The pollution on Friday should be higher than the day before, so we should expect average or somewhat worse than average air quality, between Unhealthy and Very Unhealthy.
SATURDAY, February 15: Look for the poor air quality to continue on Saturday, likely in the Unhealthy or Very Unhealthy range again.
UPDATE – Our prediction with overlay of actual readings: