What is the air quality in Chesterfield today?

The current Air Quality Index (AQI) in Chesterfield is 30 (Good). PM2.5 concentration is 7.2 µg/m³.

What is the temperature in Chesterfield right now?

The current temperature in Chesterfield 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 Chesterfield?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 2.9 (Moderate).

Air Quality in Chesterfield, United States

Windy

27.2°C · 65.5% humidity

27.2°

Feels 31.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

34 3pm

30 6pm

27 9pm

27 12am

24 3am

24 6am

25 9am

27 12pm

Air Quality Index Trend

43h · 6 stn

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Chesterfield'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

2.9

UV Moderate

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.2 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Chesterfield?

Temperature & Precipitation

PM2.5 Trend

43h · 6 stations

PM2.57.2 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX2.9

Moderate

Station readings (1 station within 25 km)

7.2

Median

7.2

Average

7.2

Low

7.2

High

PM2.5 µg/m³ · Model: 8.2 · Bias: +1.0

What is the 7-day forecast for Chesterfield?

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 Chesterfield?

Arnold West, Missouri, USA

28.5 km PM2.5: 7.0 µg/m³

Arnold West, Missouri, USA

28.5 km PM2.5: 5.5 µg/m³

What cities are near Chesterfield?

52 Ballwin 51 Manchester 40 Wildwood 38 Creve Coeur 35 Maryland Heights 33 Saint Charles 44 Saint Peters 46 Kirkwood 36 Overland 44 O'Fallon

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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 2026-07-21T23:27 UTC.