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Primary air pollutant in the Roseville area:
PM2.5 - 38 Good
Enjoy your outdoor activities.
Other Pollutants:
OZONE - 16 Good
PM10 - 8 Good
Monday, upper-level high pressure passing over northern California will reduce vertical mixing. At the surface, calm to light winds will hinder dispersion. However, low pollutant carryover from the prior day will lead to high-Good particle levels. Tuesday, a morning temperature inversion will confine pollutants near the ground. However, north-northwesterly winds will strengthen by the late morning and afternoon, aiding dispersion and keeping particle levels high-Good. Wednesday, surface high pressure strengthening over the Pacific Northwest will generate moderate and gusty northerly to north-northwesterly winds. These winds will enhance mixing and dispersion, yielding Good particle levels.
Primary Pollutant: PM2.5 - 33 Good
Primary Pollutant: PM2.5 - 44 Good
Primary Pollutant: PM2.5 - 28 Good
Primary Pollutant: PM2.5 - 33 Good
Primary Pollutant: PM2.5 - 50 Good
Primary Pollutant: PM2.5 - 39 Good