The Pennsylvania Department of Environmental Protection (DEP) has issued a Code Orange Air Quality Action Day for ozone for Monday, August 10, 2020, for the counties of Bucks, Chester, Delaware, Montgomery, and Philadelphia in southeastern Pennsylvania, the counties of Cumberland, Dauphin, Lancaster, Lebanon, and York in southcentral Pennsylvania, and the counties of Allegheny, Armstrong, Beaver, Butler, Fayette, Washington, and Westmoreland in southwestern Pennsylvania.
Monday’s forecast of mostly sunny skies, light south to southwesterly winds, high temperatures reaching into the lower 90s, and limited chances for any afternoon thunderstorms, in conjunction with increased weekday emissions, will result in ozone concentrations reaching the Code Orange level during the afternoon.