Air quality · United States
Missouri Air Quality (AQI) Now
18
Good
European Air Quality Index
European Air Quality Index
- PM2.5
- 4.5µg/m³WHO limit 15
- PM10
- 4.5µg/m³WHO limit 45
- NO₂
- 5.8µg/m³
- O₃
- 39µg/m³
- Desert dust
- 0µg/m³
- UV index
- 0.1
- US AQI
- 27
Updated: · Source: Copernicus CAMS · Open-Meteo
Air quality in Missouri is good right now: European Air Quality Index 18. Fine particulate matter (PM2.5) is 4.5 µg/m³, below the WHO guideline. Fine for all outdoor activities. Pollution is expected to peak around 16:00 over the next 48 hours (index 19, good).
Missouri 48-hour air quality forecast
Air quality across Missouri
Cleanest to most polluted.
Frequently asked questions
- Is Missouri polluted today?
- Air quality in Missouri is good right now: European Air Quality Index 18. Fine for all outdoor activities.
- Is it safe to exercise outdoors in Missouri today?
- Yes, air quality is good right now; fine for outdoor exercise.
- How is the air quality index calculated?
- The European Air Quality Index is set by the worst of PM2.5, PM10, nitrogen dioxide, ozone and sulphur dioxide: 0–20 good, 20–40 fair, 40–60 moderate, 60–80 poor, 80–100 very poor, above 100 extremely poor.
Values are Copernicus Atmosphere Monitoring Service (CAMS) model forecasts and may differ from local monitoring stations.
Missouri air quality: details
Pollutants and recent days
Nitrogen dioxide (NO₂) is 5.8 µg/m³ and ozone (O₃) 39 µg/m³; WHO guideline values are 25 (24 h) and 100 µg/m³ (8 h).