Saturday brings us the potential for very poor air quality in the afternoon. We should see increasing PM2.5 levels through the morning, and the weather conditions in the late morning and early afternoon are predicted to be conducive to quickly increasing pollution levels. We could jump up well into the Very Unhealthy range by mid- to late- afternoon, but there should be some decrease in pollution levels in the evening. Overall, it is most likely that we will spend the day at Unhealthy or Very Unhealthy.
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