Air Quality in Saint Peters, United States
Partly Cloudy
30.1°C · 56.3% humidity
30.1°
Feels 34.0°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Saint Peters's air quality — share it
AQI Forecast
25
7am
25
25
28
10am
27
27
27
1pm
27
27
25
4pm
25
25
25
7pm
34
54
54
10pm
54
54
54
1am
34
34
27
4am
27
27
Air Quality Index Trend
45h · 4 stnSaint 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. Current PM2.5 concentration in Saint Peters is 1.4× the WHO annual guideline of 5 µg/m³.
56.3%
Humidity
27.0 km/h
Wind N
1020.2 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.79 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Saint Peters?
Temperature & Precipitation
PM2.5 Trend
45h · 4 stationsPM2.56.79 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
What is the 7-day forecast for Saint Peters?
05-29
30.1° 8.3°
1.31 mm
05-30
28.3° 18.8°
3.38 mm
05-31
31.1° 11.9°
06-01
30.8° 17.5°
0.06 mm
06-02
26.2° 13.8°
06-03
29.8° 23.3°
0.44 mm
06-04
26.7° 20.3°
3.88 mm
Both models agree
Avg diff: 4.0°C
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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 2026-05-29T15:05 UTC.