The DEP declared Code Orange Air Quality Action Day for Fine Particulate Matter for Wednesday, May 31, 2023, in Multiple Areas of Pennsylvania:
• The Philadelphia Area, which includes the counties of Bucks, Chester, Delaware, Montgomery, and Philadelphia
• The Lehigh Valley-Berks Area, which includes the counties of Berks, Lehigh, and Northampton
• The Susquehanna Valley Area, which includes the counties of Cumberland, Dauphin, Lancaster, Lebanon, and York
An easterly wind is forecasted to transport smoke from a large wildfire in southern Nova Scotia that will likely contribute to daily average concentrations of fine particulate matter in the Code Orange range on Wednesday.
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