We have a chance at good air again on Friday, but that is certainly not a sure thing. We're expecting mostly stable air quality overnight, mostly at Unhealthy but possibly at the high end of the Unhealthy for Sensitive Groups range. We should see some clearing in the morning, but that might only drop us lower in the Unhealthy range or it could drop us into Good/Moderate. For the late afternoon and evening, look for increasing PM2.5 levels again relative to where we were in the afternoon.
UPDATE – Our prediction with overlay of actual readings:
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