Home > USA > Pennsylvania > Montgomery County > Merion Station
Primary air pollutant in the Merion Station area:
PM2.5 - 28 Good
Enjoy your outdoor activities.
Other Pollutants:
PM10 - 6 Good
OZONE - 11 Good
Current Conditions: At 2 p.m. EST this Friday afternoon, a cold light rain is falling across the area as low pressure moves into eastern Pennsylvania. A brisk west to southwest wind is keeping fine particle pollution (PM2.5) levels well down inside the good range. Good air quality continues through the weekend, then may deteriorate to moderate Monday out ahead of the next cold front. Here are the forecast details: *** Saturday’s forecast: As low pressure moves off the east coast Saturday, it will be windy with a partly sunny sky. The gusty northwest wind will create plenty of vertical and horizontal mixing needed to keep PM2.5 at low concentrations. Highs will recover to near 50 degrees. *** Sunday’s forecast: Another partly sunny day is in store for Sunday, and still on the breezy side. Once again, the northwest breeze makes for ample mixing and dispersion of any pollutant, so air quality remains in the good range. *** Monday’s forecast: Sunshine and a few clouds Monday with a milder afternoon as temperatures move into the upper 50s. Lighter low level winds may allow for PM2.5 to rise into the moderate threshold in parts of the area. *** Extended forecast: Still on the mild side Tuesday as a cold front moves through early in the day. Showers are likely Monday night into Tuesday morning. Air quality will be moderate early in the morning, then improve to the good range during the afternoon. High pressure brings tranquil conditions Wednesday. For Thanksgiving day, a storm system may come far enough north to bring a round of rain, but also may miss to the south with the track uncertain at this time. Air quality will be in the good range during the mid-week period. Temperatures look to trend below normal over the holiday weekend.---McAuliffe
Primary Pollutant: PM2.5 - 40 Good
Primary Pollutant: PM2.5 - 38 Good
Primary Pollutant: PM2.5 - 46 Good
Primary Pollutant: PM2.5 - 56 Moderate
Primary Pollutant: PM2.5 - 40 Good
Primary Pollutant: PM2.5 - 0 Good