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Missouri Air Quality

Current AQI at 28 monitors, highest 77 (Moderate) · Measured 10/26/2026, 4:00 PM PT

Monitors
28
Highest AQI
77
Moderate
Typical (median)
49
Good
Above 100
0

Monitoring sites in Missouri

Worst first. Times are local.

  • 77Branch StreetModerate · Coarse particles (PM10) · Mon 10/26/2026, 6:00 PM CDT
  • 74SavannahModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 61Foley WestModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 58FarrarModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 58Maryland HeightsModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 58St. JosephModerate · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 55El Do SpringsModerate · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 54Orchard FarmModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 54TrimbleModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 52TroostModerate · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 51Bonne TerreModerate · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 50Watkins Mill State ParkGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 50West AltonGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 49New BloomfieldGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 47Fellows LakeGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 46AlbaGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 46Rocky CreekGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 45PacificGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 44Arnold WestGood · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 42Finger Lakes SPGood · Ozone · Mon 10/26/2026, 5:00 PM CDT
  • 40Front StreetGood · Coarse particles (PM10) · Mon 10/26/2026, 6:00 PM CDT
  • 39LibertyGood · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 39RG_SouthGood · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 38Blair StreetGood · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 38Hillcrest HSGood · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 34Forest ParkGood · Fine particles (PM2.5) · Mon 10/26/2026, 6:00 PM CDT
  • 28Mark Twain SPGood · Coarse particles (PM10) · Mon 10/26/2026, 6:00 PM CDT
  • 21CarthageGood · Coarse particles (PM10) · Mon 10/26/2026, 6:00 PM CDT

By county

Highest current AQI among the county's monitors

What the AQI means

  • 0-50Good. Air quality is satisfactory and poses little or no risk.
  • 51-100Moderate. Acceptable. A few unusually sensitive people may have symptoms.
  • 101-150Unhealthy for Sensitive Groups. People with heart or lung disease, older adults, children and teens should limit long or heavy outdoor exertion.
  • 151-200Unhealthy. Everyone may begin to feel effects. Sensitive groups should avoid long or heavy outdoor exertion.
  • 201-300Very Unhealthy. Health alert: the risk of health effects is increased for everyone.
  • 301-500Hazardous. Health warning of emergency conditions. Everyone is more likely to be affected.

Frequently asked questions

Where is the air worst in Missouri right now?
Branch Street has the highest current reading at AQI 77 (Moderate).
How often are readings updated?
Monitors report every hour. We refresh this page with the latest hour from EPA AirNow.

Source: EPA AirNow · Last updated 10/26/2026 · Data are preliminary and subject to change