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Southwest PA Ozone/PM2.5 Forecast

Small map of Pennsylvania showing counties involved in the sw partnership.
Forecasted AQI for Ozone Air Quality Index Scale Forecasted AQI for PM2.5
March 30, 2015

 

Date: Monday, March 30, 2015
Action Day?:  No
Temperature: middle to upper 40s Monday
Discussion:
A snow shower will start the day on Monday, with some sunshine returning in the afternoon. Robust west to northwest flow again will prevent PM2.5 from going into the moderate range. High temperatures mainly in the middle to upper 40s. Mostly cloudy Monday night with lows in the lower 30s.

Extended:
Springlike swings in temperatures are likely during the extended period. A weak area of low pressure moving to our north can bring a rain or snow shower early Tuesday, then high pressure builds in during the middle of the week with warmer air coming back in. PM levels will start the period in the good range, but then winds shift into more of a south to southwest direction in the middle of the week and bring in warmer and more humid air, so moderate concentrations are more likely by Wednesday and Thursday. A cold front will then bring in some showers by week's end.--McAuliffe

 

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