Air Quality in Saint Peters, United States

Windy
25.6°C · 45.9% humidity
25.6°
Feels 25.6°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
37 11pm
37
37
30 2am
32
33
34 5am
35
16
16 8am
16
17
37 11am
17
37
17 2pm
17
17
17 5pm
17
37
37 8pm
37
37
CAMS model adj -17
54
54
54
54
54
54
54
54
34
34
34
34
54
34
54
34
34
34
34
34
54
54
54
54
AD 728×90

Air Quality Index Trend

40h · 4 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.

45.9%
Humidity
64.0 km/h
Wind NE
1017.8 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.09 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint Peters?

Temperature & Precipitation

PM2.5 Trend

40h · 4 stations
PM2.57.09 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
AD 300×250

What is the 7-day forecast for Saint Peters?

08-03
29.7° 19.6°
08-04
34.7° 18.0°
08-05
37.3° 14.5°
2.38 mm
08-06
39.8° 20.8°
1.5 mm
08-07
32.8° 22.0°
08-08
37.3° 22.7°
1.38 mm
08-09
39.8° 25.0°
0.5 mm
Both models agree Avg diff: 3.8°C

Where are air quality stations near Saint Peters?

35
Ladue, Missouri, USA
29.2 km PM2.5: 8.4 µg/m³

What cities are near Saint Peters?

30 O'Fallon 40 Saint Charles 40 Chesterfield 40 Maryland Heights 30 Wentzville 40 Hazelwood 42 Creve Coeur 44 Ballwin 31 Wildwood 44 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 2026-08-08T07:27 UTC.