When the Air Quality Index (AQI) is 101 or higher, we launch public communication efforts. AirNow.gov is our information resource.
- Pay attention to the U.S. Environmental Protection Agency’s Air Quality Index when planning outdoor summer activities, especially if you have asthma or another lung disease.
- Warmer temperatures can mean higher ozone levels.
AQI Basics for Ozone and Particle Pollution
Air Quality levels can worsen during wildfires and people can take steps to protect their health.
County public health and emergency management staff actively follow air quality levels to timely communicate with residents and visitors.
We encourage people to visit AirNow.gov or download the app. This online tool lets people know any current health risk and guides them on steps they can take to protect themselves and their loved ones.
AirNow.gov reports air quality using the official U.S. Air Quality Index (AQI), a color-coded index designed to inform you on 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.
AirNow is a partnership of the U.S. Environmental Protection Agency, National Oceanic and Atmospheric Administration (NOAA), National Park Service, NASA, Centers for Disease Control, and tribal, state, and local air quality agencies.
Reference Air Quality Guides
These guides provides ways to protect your health when pollution reaches unhealthy levels: