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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
October 23, 2014

 

Date: Thursday, October 23, 2014
Action Day?:  No
Temperature:  middle 50s Thursday
Discussion:
Clouds and some sunshine will prevail on Thursday with high pressure building in from the west. Winds will continue brisk from the northwest, and this will keep fine particulate on the low side. Afternoon temperatures reaching into the middle 50s. Partly cloudy Thursday night, and on the chilly side with lows in the upper 30s.

Extended:
Cloudy to partly sunny for the day Friday with high pressure and lighter winds. PM will be on the increase Friday, but should remain in the good range. Temperatures will max out near the 60 degree mark. A weak frontal system will then move across the area sometime on Saturday, but is not expected to produce any rainfall. Following this, high pressure will rebuild Saturday night into Sunday with brisk northwesterly winds once more. Good air quality will be the rule over the weekend. Winds will then turn into the southwest early next week with some warming, and with this, fine particulate will be on the rise, perhaps briefly into moderate territory. Another cold front will bring the chance for a shower on Tuesday, with increasing ventilation providing lower concentrations of PM. The good air quality should continue through the middle of next week.---McAuliffe

 

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