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Primary air pollutant in the Nicolaus area:
PM2.5 - 78 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 - 5 Good
Tuesday and Wednesday, as an next upper-level ridge of high pressure approaches northern California, atmospheric mixing will continue to be hindered. In addition, light and variable winds each day will allow pollutants to accumulate in the Sacramento region, while strong morning and evening temperature inversions confine pollutants near the surface. Therefore, particle levels will be Unhealthy for Sensitive Groups on both days. Thursday, the ridge aloft will weaken slightly as a trough of low-pressure brushes by to the north. In addition, brief periods of light northerly winds will aid dispersion at times. However, periods of calm winds and temperature inversions during the morning and evening will continue to hinder low-level mixing and dispersion. As a result, particle levels will be high-Moderate.
Primary Pollutant: PM2.5 - 77 Moderate
Primary Pollutant: PM2.5 - 77 Moderate
Primary Pollutant: PM2.5 - 75 Moderate
Primary Pollutant: PM2.5 - 81 Moderate
Primary Pollutant: PM2.5 - 84 Moderate
Primary Pollutant: PM2.5 - 73 Moderate