PA Ozone/PM2.5 Forecast
September 1, 2014
Date: Monday, September 1, 2014
Hot and humid weather will continue for Labor Day. Mostly cloudy skies with scattered showers and thunderstorms will limit ozone to the Good range. Particles will persist in the low Moderate range in the humid air mass.
Skies will clear during the day on Tuesday, although a line of thunderstorms will move though in the evening ahead of a weak cold front approaching from the west. It will be another very hot and humid day. The thunderstorms will arrive late enough for ozone to rise into the Moderate range, and particles will continue in the Moderate range. The air mass building in behind the front for Wednesday will be drier but not much cooler. As a result, particle concentrations will drop into the Good range, but ozone will remain Moderate due to ample sunshine and light winds, with an afternoon sea breeze.
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