The highest AQ index in California (as of 2:00 PST) is currently the Portola area. Particle Pollution (PM2.5) is measuring at 97 (Moderate). This means air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Over the next few days, the highest Particle Pollution (PM10) will be in the Brawley area. It is forecasted to be Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Today, moderate and gusty north-northwesterly winds through the early afternoon hours will produce areas of blowing dust. By the late afternoon and evening, winds will weaken, reducing the potential for blowing dust. Therefore, AQI levels will be mid-Moderate for PM10. Tomorrow, a strong morning temperature inversion will trap pollutants near the ground. In addition, calm to light southerly winds will reduce dispersion and transport regional pollutants into the Imperial Valley. Thus, AQI levels will be low-Moderate for PM2.5.
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 0 minutes ago
Below is a list of counties in California. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.