Air Quality in Clayton, United States

Windy
22.7°C · 49.2% humidity
22.7°
Feels 22.7°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 6pm
27
34
32 9pm
34
34
34 12am
27
27
27 3am
27
27
27 6am
27
25
25 9am
25
25
25 12pm
25
27
27 3pm
27
27
AD 728×90

Air Quality Index Trend

47h · 3 stn

Clayton's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

49.2%
Humidity
41.3 km/h
Wind NNW
1012.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
32
7.59 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Clayton?

Temperature & Precipitation

PM2.5 Trend

47h · 3 stations
PM2.57.59 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
7.59
Median
6.73
Average
5.3
Low
7.7
High
PM2.5 µg/m³ · Model: 7.0 · Bias: -0.6
Both models agree Avg diff: 3.9°C

Where are air quality stations near Clayton?

40
Forest Park, Missouri, USA
3.9 km PM2.5: 9.6 µg/m³
41
East St. Louis, Illinois, USA
14.6 km PM2.5: 9.8 µg/m³
36
Arnold West, Missouri, USA
22.5 km PM2.5: 8.6 µg/m³
5
Arnold West, Missouri, USA
22.5 km PM2.5: 1.2 µg/m³

What cities are near Clayton?

32 University City 30 Webster Groves 31 Overland 30 Creve Coeur 28 Kirkwood 28 Affton 30 St. Louis 31 Ferguson 31 Maryland Heights 29 Lemay
Get AQI alerts for Clayton

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T02:43 UTC.