What is the air quality in Wentzville today?

The current Air Quality Index (AQI) in Wentzville is 46 (Good). PM2.5 concentration is 11.04 µg/m³.

What is the temperature in Wentzville right now?

The current temperature in Wentzville 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 Wentzville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 6.9 (High).

Air Quality in Wentzville, 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 2pm

46 5pm

31 8pm

29 11pm

26 2am

25 5am

25 8am

25 11am

Air Quality Index Trend

36h · 4 stn

View full history →

Wentzville'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

6.9

UV High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

11.04 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Wentzville?

Temperature & Precipitation

PM2.5 Trend

36h · 4 stations

PM2.511.04 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX6.9

High

What is the 7-day forecast for Wentzville?

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: 3.4°C

What cities are near Wentzville?

46 O'Fallon 46 Saint Peters 30 Chesterfield 50 Wildwood 32 Saint Charles 38 Ballwin 37 Manchester 35 Maryland Heights 34 Creve Coeur 37 Hazelwood

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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 2026-07-21T22:29 UTC.