The US EPA and a consortium of partners, including local air districts, operate the AirNow program. AirNow reports air quality using the official U.S. Air Quality Index (AQI), a color-coded index designed to communicate whether air quality is healthy or unhealthy for you. When you know the AQI in your area, you can take steps to protect your health.

Check My Air Quality

Start here - recommended tools for clear, air quality information:

• Fire.AirNow – AQI in real-time with government monitors & community sensors.
• AirNow – AQI with forecasting using government monitors.
• How to use AirNow – video by fellow air district, Placer County APCD.

More air quality resources for those that love details:

• Daily Fire & Weather Forecast video by NCGCC, North Ops Predictive Services.
• Area Forecast Discussion by National Weather Service.
• Wind Forecast by Windy with PM-2.5.

Enhanced AQI Charts for Healthier Choices

We’ve created enhanced AQI charts to make it easier for everyone to make healthier choices.  They now include recommended actions for schools, businesses, government agencies, and the general public at different AQI levels.  

EnglishEspañol

Stay Healthy When Wildfire Smoke Hits

Wildfire smoke can significantly impact air quality and health, so it’s important to know how to protect yourself and your family. The NoSoCo Air guide "Preparing for Wildfire Smoke" offers practical advice on monitoring local air quality, reducing exposure both indoors and outdoors, and using air filters and masks effectively. It also includes special considerations for sensitive groups such as children, older adults, and individuals with health conditions. 

EnglishEspañol

District Air Monitoring Program

We perform ambient air monitoring for planning and regulatory purposes. Federal regulations require state and local agencies that conduct ambient air monitoring to use specidic federal reference analyzers, to meet specific siting criteria, and to certify data quality to meet the federal regulatory requirements of 40CFR Part58.

The District has three particulate matter (PM-10) sites located in Healdsburg, Cloverdale, and Guerneville. Specific information regarding the monitoring sites is included in the state’s Annual Network Monitoring Report, which is reviewed annually by the District and the California Air Resource Board, and approved by EPA.