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Primary air pollutant in the Somerville 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 - 29 Good
5/8 - Steady westerly winds, mostly sunny skies, and temperatures lingering in the mid to upper 60s are expected on Friday as high pressure pushes into the region. In turn, air quality will rise to the Good/Moderate threshold statewide. 5/9 - Ozone levels are expected to return to the Good category statewide on Saturday as low pressure brings cloudy skies and the chance for scattered showers/thunderstorms to the region. Levels of fine particulate will continue to linger near the Good/Moderate threshold across the state. 5/10 - Partly sunny skies, high temperatures in the mid to upper 70s, and west-southwest winds are forecast on Sunday. In turn, ozone levels will rise to the Moderate category in central and southern New Jersey, while fine particulate levels rise to the Moderate category along the I-95 corridor. 5/11 - Air quality is forecast to return to the Good category statewide on Monday due to northerly winds and temperatures dropping into the mid to upper 50s.
Primary Pollutant: PM2.5 - 45 Good
Secondary Pollutant: OZONE - 45 Good
Primary Pollutant: PM2.5 - 50 Good
Secondary Pollutant: OZONE - 45 Good
Primary Pollutant: PM2.5 - 51 Moderate
Secondary Pollutant: OZONE - 50 Good
Primary Pollutant: OZONE - 40 Good
Secondary Pollutant: PM2.5 - 35 Good