Current AQ Index in Sierra Brooks
Sierra Brooks Air Pollutants
Primary air pollutant in the Sierra Brooks area:
PM2.5 - 39 Good
Enjoy your outdoor activities.
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Primary air pollutant in the Sierra Brooks area:
PM2.5 - 39 Good
Enjoy your outdoor activities.
Friday, April 11: Moderate southwesterly winds will aid dispersion during the afternoon and evening as a trough of low pressure aloft approaches the northern Sierras. As a result, AQI levels will be high-Good. Saturday, April 12: The upper-level trough of low pressure will slowly advance across northern California, aiding atmospheric mixing. However, surface winds will be light and variable during the morning and evening hours, limiting dispersion. Therefore, AQI levels will increase to low-Moderate. Sunday, as surface high pressure passes to the north, light to moderate easterly winds will aid low-level mixing and dispersion in Portola throughout the day. As a result, AQI levels will improve to high-Good. Monday, an upper-level ridge of high pressure will limit atmospheric mixing. Furthermore, lighter easterly winds will inhibit dispersion. Therefore, AQI levels will increase to low-Moderate. Tuesday, calm to light winds will reduce dispersion in Portola, leading to pollutant build-up. However, daytime temperatures in the low-70s will increase low-level mixing though the afternoon, keeping AQI levels low-Moderate. Wednesday, a temperature inversion will confine pollutants near the surface early in the day. Additionally, calm to light morning and evening winds will limit dispersion. Therefore, AQI levels will continue to be low-Moderate.
Primary Pollutant: PM2.5 - 50 Good
Primary Pollutant: PM2.5 - 53 Moderate
Primary Pollutant: PM2.5 - 44 Good
Primary Pollutant: PM2.5 - 53 Moderate
Primary Pollutant: PM2.5 - 56 Moderate
Primary Pollutant: PM2.5 - 55 Moderate