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Primary air pollutant in the Northumberland area:
PM2.5 - 52 Moderate
If you are unusually sensitive to particle pollution, consider reducing your activity level or shorten the amount of time you are active outdoors.
Other Pollutants:
OZONE - 17 Good
Current Conditions: At 2 p.m. EST this Friday afternoon, light snow is falling across the area associated with a weak low pressure system over West Virginia. This low will combine with a stronger low just off the east coast. As the east coast low pulls away, it will set the stage for rather cold air to pour in over the weekend, with temperatures not moderating until Tuesday of next week. Here are the forecast details: *** Saturday’s forecast: Clouds and a little sun, windy, and cold Saturday. High temperatures will be limited to the upper 20s and breezy northwest winds keep fine particle (PM2.5) concentrations low. *** Sunday’s forecast: Sunday will be the coldest day of the forecast period. Despite sunshine most of the day, maximum temperatures will remain in the lower 20s. Low humidity and ample mixing keep PM2.5 in the good range. *** Monday’s forecast: Partly to mostly sunny Monday with high pressure remaining in control. A morning inversion may result in PM2.5 averages reaching the upper good range in a few locations. *** Extended forecast: The next weather system may bring snow showers in Monday night into Tuesday, then high pressure builds back in from the north Christmas Day and Thursday with temperatures near normal and air quality in the upper good/lower moderate range.---McAuliffe
Primary Pollutant: PM2.5 - 18 Good
Primary Pollutant: PM2.5 - 37 Good
Primary Pollutant: PM2.5 - 48 Good
Primary Pollutant: PM2.5 - 0 Moderate