AQ Index for Contra Costa County, California

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Air Quality Index for Contra Costa County, California

The area with the highest AQ Index (as of 4:00 PST) in is in the Concord area. Particle Pollution (PM2.5) is measuring at 43 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.

Over the next few days, the highest primary air pollutant will be Particle Pollution (PM2.5) in the Rio Vista area. It is forecasted to be 53 (Moderate), meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

Below is a clickable map of Contra Costa County, California. The markers on the map identify large, populated cities. If you hover over a marker, it will display the city name and the current AQ index. The color of the city markers also references the current AQ risk level.

Range0 - 5051 - 100101 - 150151 - 200201 - 300301 - 500
Color
CategoryGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardous

Last Updated 14 minutes ago

AQ Index Forecast by City in Contra Costa County

Below is a list of cities in Contra Costa County where we track and forecast the AQ index. Click on a city name to get the current AQ index as well as any available forcasts.

Concord Antioch Richmond San Ramon Pittsburg
Walnut Creek Brentwood Danville Oakley Martinez
Pleasant Hill San Pablo Hercules Lafayette Bay Point
El Cerrito Orinda Pinole Moraga Discovery Bay
Alamo Clayton Blackhawk Rodeo Contra Costa Centre
Saranap Camino Tassajara Kensington Tara Hills Pacheco
North Richmond Rollingwood East Richmond Heights Reliez Valley San Miguel
Vine Hill Crockett Montalvin Manor Byron Bethel Island
Castle Hill Knightsen Shell Ridge Alhambra Valley Acalanes Ridge
Diablo Norris Canyon North Gate Clyde Port Costa