After being spoiled by three days of great air quality, we're going to be coming back to reality a bit on Tuesday. The weather forecasts we review are giving us a small range of possible outcomes, so our prediction range for tomorrow is larger than we normally like. In the morning, the air quality could remain Good/Moderate, or we could see PM2.5 levels start to move up shortly after midnight. By afternoon and evening, all the forecasts point toward increasing PM2.5 levels, and that could put us anywhere between Unhealthy for Sensitive Groups and the high end of the Unhealthy range.
UPDATE – Our prediction with overlay of actual readings:
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