Saturday gives us a chance at some decent air for a bit, but not for the entire day. After midnight, the PM2.5 levels should be in the Unhealthy range, but they should begin to decrease around sunrise. In the best-case scenario, we will see PM2.5 levels drop into Unhealthy for Sensitive Groups or Moderate , but it is also possible that the pollution will remain in the Unhealthy range. Either way, we should then see some increase in PM2.5 levels in the late afternoon and evening hours.
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