Air Quality in Saint Peters, United States

Partly Cloudy
22.0°C · 65.6% humidity
22.0°
Feels 22.0°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
25 5pm
27
27
29 8pm
30
31
32 11pm
33
26
26 2am
27
27
27 5am
27
27
25 8am
25
25
25 11am
25
25
25 2pm
25
25
AD 728×90

Air Quality Index Trend

46h · 6 stn

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

65.6%
Humidity
25.7 km/h
Wind NNW
1012.9 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
29
7.0 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint Peters?

Temperature & Precipitation

PM2.5 Trend

46h · 6 stations
PM2.57.0 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250

What is the 7-day forecast for Saint Peters?

06-09
31.4° 14.3°
6.0 mm
06-10
29.2° 21.5°
56.25 mm
06-11
27.4° 19.1°
06-12
30.2° 20.6°
0.31 mm
06-13
27.6° 23.1°
0.19 mm
06-14
32.4° 15.2°
8.13 mm
06-15
32.6° 24.0°
0.44 mm
Both models agree Avg diff: 4.1°C

Where are air quality stations near Saint Peters?

20
Ladue, Missouri, USA
29.2 km PM2.5: 4.8 µg/m³
54
Ladue, Missouri, USA
29.2 km PM2.5: 13.5 µg/m³

What cities are near Saint Peters?

30 O'Fallon 22 Saint Charles 20 Chesterfield 22 Maryland Heights 30 Wentzville 23 Hazelwood 23 Creve Coeur 25 Ballwin 30 Wildwood 24 Manchester
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T01:06 UTC.