Today’s Air Quality

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.

Air Quality Index

To check the AQI we recommend:

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

For a detailed look:

• 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.

Additional AQI Support

NoSoCo Air has developed enhanced AQI Charts with suggested actions for the public, business, government agencies, and childcare facilities for each AQI level.

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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.

The 2024 Toxics “Hot Spots” Report is now available2023 Ambient Air Quality Standards Report2023 Toxics “Hot Spots” Report

Tips for Wildfire Smoke Resiliency

There are things that you and your family can do to become resilient against the harmful smoke pollution caused by wildfires.

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