Home > USA > Pennsylvania > Allegheny County > Pittsburgh
Primary air pollutant in the Pittsburgh area:
OZONE - 35 Good
Enjoy your outdoor activities.
Other Pollutants:
PM2.5 - 24 Good
*** A WINTER STORM WARNING IS IN EFFECT FOR WESTMORELAND, WASHINGTON, AND FAYETTE COUNTIES FROM 1 PM EST SATURDAY UNTIL 1 PM EST SUNDAY. A WINTER WEATHER ADVISORY IS IN EFFECT FROM 1 PM EST SATURDAY UNTIL 1 PM EST SUNDAY FOR ALLEGHENY, BEAVER, BUTLER, AND ARMSTRONG COUNTIES ***Current Conditions at 3 p.m. EST this Friday afternoon: There is a brief lull in the winds but it remains cold as temperatures struggle to get to the 30-degree mark. Fine particle pollution (PM2.5) concentrations are well down inside the good range. A clipper system is expected to bring accumulating snow to the area Saturday and Saturday night, followed by an Arctic blast Sunday into Monday. Moderate air quality occurs in parts of the area Saturday, with lower PM2.5 to follow Sunday and Monday. A warmup finally comes to pass by the middle of the week, with precipitation possibly in liquid form Wednesday night. Here are the forecast details: *** Saturday’s forecast: Mostly cloudy Saturday with snow arriving during the afternoon. PM2.5 will be highest during the morning, with an overall average for the day in the lower moderate range. Total snow accumulations between Saturday afternoon and night will range from 2-3 inches in the northern counties to as much as 8 in the mountains to the south and east. *** Sunday’s forecast: Windy and frigid Sunday with snow tapering off to snow showers. Highs will be held to the upper teens with near zero wind chills. Blowing and drifting of snow will occur. PM2.5 levels will fall well down inside the good range. *** Monday’s forecast: Mostly cloudy with a little less wind Monday, but still cold as temperatures hold in the lower 20s. Air quality will remain in the good range. *** Extended forecast: As the upper level flow turns westerly by the mid-week period, a warming trend will commence. Warmer air influx often results in higher humidity, which leads to fine particle increases, so moderate air quality is predicted for the Tuesday to Thursday time frame. Precipitation in the form of rain is possible Wednesday night into Thursday.---McAuliffe
Primary Pollutant: PM2.5 - 54 Moderate
Primary Pollutant: PM2.5 - 25 Good
Primary Pollutant: PM2.5 - 35 Good
Primary Pollutant: PM2.5 - 54 Moderate
Primary Pollutant: PM2.5 - 0 Moderate