• 0 - 50 Good
  • 51 - 100 Moderate
  • 101 - 150 Unhealthy for Sensitive Groups
  • 151 - 200 Unhealthy
  • 201 - 300 Very Unhealthy
  • 301 - 500 Hazardous
  • Pollutant

  • O3 - Ozone
  • PM - Particulate Matter
  • Concentration

  • ppb - parts per billion
  • µg/m³ - microgram per cubic meter

Announcement

The District Air Quality Forecast products now reflect EPA updates to the Air Quality Index for fine particulate matter (PM2.5).

Read about the changes to the PM2.5 AQI.

Data Table

Localized Impacts

Please note, the Daily Air Quality Forecast is issued for your entire County. Localized wildfire smoke, blowing dust, or other air quality situations may differ with the forecast as it pertains to your local area. Follow instructions from your emergency responders as necessary and take precautions as needed.

More Information

To obtain air quality data for publishing purposes please reference our AirStatus.xml document. This document is updated daily by 4:30PM and provides the following information:

  • Time and date
  • Counties under forecast
  • Air quality status for today and tomorrow
  • Wood burning status for today and tomorrow (in-season only: November - February)