Thursday was certainly a good surprise as we saw several hours with Good air quality when we expected to see Unhealthy or worse conditions. Friday looks to be less spectacular, likely bringing us the Unhealthy and Very Unhealthy air quality we were expecting for Thursday. Look for increasing PM2.5 levels through the early morning hours, then one of the weather forecasts shows a chance that levels could drop somewhat around late morning. But an alternative weather forecast has us continuing to see slightly increasing PM2.5 through the morning and afternoon, and both weather forecasts predict conditions that will increase the accumulation of pollution more quickly in the evening hours.
UPDATE – Our prediction with overlay of actual readings:
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