What is the air quality in Saint Peters today?

The current Air Quality Index (AQI) in Saint Peters is 47 (Good). PM2.5 concentration is 11.22 µg/m³.

What is the temperature in Saint Peters right now?

The current temperature in Saint Peters is 27.2°C (feels like 31.0°C). Humidity is 65.5% and wind speed is 53.6 km/h.

Is it safe to go outside in Saint Peters?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Saint Peters, United States

Windy

27.2°C · 65.5% humidity

27.2°

Feels 31.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

54 1pm

47 4pm

32 7pm

29 10pm

26 1am

25 4am

24 7am

25 10am

Air Quality Index Trend

42h · 6 stn

View full history →

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.

65.5%

Humidity

53.6 km/h

Wind NE

1011.7 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

11.22 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for Saint Peters?

Temperature & Precipitation

PM2.5 Trend

42h · 6 stations

PM2.511.22 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX10.9

Extreme

What is the 7-day forecast for Saint Peters?

07-21

30.3° 23.3°

07-22

27.5° 20.7°

07-23

20.2° 19.2°

0.88 mm

07-24

28.9° 17.7°

0.75 mm

07-25

27.0° 19.6°

3.88 mm

07-26

32.6° 24.0°

1.06 mm

07-27

28.3° 21.5°

Both models agree Avg diff: 3.5°C

Where are air quality stations near Saint Peters?

Ladue, Missouri, USA

29.2 km PM2.5: 6.2 µg/m³

What cities are near Saint Peters?

47 O'Fallon 28 Saint Charles 27 Chesterfield 33 Maryland Heights 48 Wentzville 36 Hazelwood 32 Creve Coeur 35 Ballwin 43 Wildwood 35 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 2026-07-21T21:45 UTC.