Air Quality Information

for the Sacramento Region

Sunday, an upper-level ridge of high pressure over northern California will reduce atmospheric mixing in the Sacramento region. Furthermore, an overnight temperature inversion will allow pollutants to accumulate at ground level, and light winds throughout the day will limit pollutant dispersion. Therefore, particle levels will be Unhealthy for Sensitive Groups. Monday, the upper-level ridge of high pressure will weaken, allowing for increased atmospheric mixing. However, a morning temperature inversion and calm to light winds will inhibit pollutant dispersion in the Sacramento area. As a result, particle levels will be high-Moderate. Tuesday, a weak weather system moving into northern California will produce light to moderate southeasterly winds and enhance atmospheric mixing in the Sacramento region. These weather conditions will disperse some pollutants, resulting in mid-Moderate particle levels.