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Primary air pollutant in the Merion Station area:
PM2.5 - 72 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:
PM10 - 23 Good
OZONE - 26 Good
Current Conditions As of 2 PM on Monday: Surface high pressure is located off the New England Coast allowing for more of a cool, maritime, east to southeast wind today keeping temperatures down in the low 60’s. A combination of light wind flow, and continue lack of moisture/rain, will promote PM2.5 levels in the low-moderate range, especially in the city, with slightly lower levels in the suburbs. *** Tuesday’s forecast: As a warm front passes well to the north, it is expected to turn warmer into the mid-70’s with a south to southwest wind on Tuesday and low-moderate PM2.5 levels continuing. *** Wednesday’s forecast: The next cold front then approaches Wednesday. Once again, this front does not look like it will produce much needed rainfall. Increasing mixing with a northwesterly wind will lead to good air quality Wednesday and Thursday. ---VanLenten
Primary Pollutant: PM2.5 - 52 Moderate
Primary Pollutant: PM2.5 - 51 Moderate
Primary Pollutant: PM2.5 - 0 Good