U.S. Air Quality

Unhealthy conditions for sensitive groups in California and unhealthy in Pennsylvania

Today, great part of the country read good and moderate air quality conditions.
EPA Air Now reported moderate PM2.5 levels in almost the same places mentioned by Ruben yesterday (Mid-Atlantic, Ohio River Valley and Southeastern states).
In addition to the mentioned moderate levels. Hanford Ca. reached levels from "moderate" to "unhealthy for sensitive groups" (top left). Moreover, in Liberty Pa. (Clairton area) the PM2.5 levels reached from "moderate" to "unhealthy" (top right).

A very small patch of thin remnant smoke was observed from east central British Columbia into west central Alberta. This smoke likely originated from the numerous wildfires that took place in central British Columbia yesterday.