Friday's air quality is likely to be disappointing after the last couple of days we've had in Beijing, but it should still be better than average. We should see increasing PM2.5 levels after midnight, putting us into Unhealthy by 6AM. We could see PM2.5 levels begin to come down as early as 6AM, and once the clearing begins it should continue gradually throughout the afternoon as we drop toward Unhealthy for Sensitive Groups and possibly into Moderate. Then by sunset, we should see levels increasing again.
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