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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
February 13, 2016

 

Date: Saturday, February 13, 2016
Action Day?:  No
Temperature:  Near 10
Discussion:
On Saturday, mostly cloudy skies will persist as the disturbance that drove the cold front through late Friday, moves well off to our east. Winds will be blowing quite strongly during the day out of the northwest, forcing colder and drier to dive southeastward across the region. As a result, afternoon temperatures should only peak near the 10 degree mark. It is the source of the air mass (from central Canada) along with the strong winds that will limit PM 2.5 formation to the good category.

Extended Forecast

Date

2/13/2016

2/14/2016

2/15/2016

2/16/2016

Ozone

WHITE

WHITE

WHITE

WHITE

PM

GREEN

GREEN

GREEN

GREEN


Extended:
As we take a peek into next week, we notice that the week will start off with an arctic air mass entrenched over the area. This air mass will lift out starting on Monday as the overall weather pattern remains progressive. In fact, we will see a storm system move in on Monday into Tuesday. This system will deliver a variety of rain/snow for the region as it tracks off to the north and east. On the backside of the system, conditions will remain cold and dry as a new high pressure system builds in over the upper Midwest. This high will creep east of our area by Friday, leading us to warmer weather as we head into the weekend. Overall, air quality levels will remain low early on as a result of the air mass in place. As temperatures begin to rebound in the Monday / Tuesday time frame, expect PM 2.5 levels to rise back to the good / moderate threshold. Levels will fall off on Wednesday as the high to the east deliver the cold and dry conditions. Once the high moves off to our east and warm air returns late in the week, expect PM 2.5 levels to increase back into the moderate category. --Nolan

 

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