What is the air quality in Ballwin today?

The current Air Quality Index (AQI) in Ballwin is 44 (Good). PM2.5 concentration is 10.64 µg/m³.

What is the temperature in Ballwin right now?

The current temperature in Ballwin is 25.6°C (feels like 25.6°C). Humidity is 45.9% and wind speed is 64.0 km/h.

Is it safe to go outside in Ballwin?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 5.9 (High).

Air Quality in Ballwin, United States

Windy

25.6°C · 45.9% humidity

25.6°

Feels 25.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated

23 5pm

44 8pm

31 11pm

26 2am

24 5am

23 8am

23 11am

23 2pm

Station readings 47h ago

AQI 23

PM2.5 5.6 µg/m³ · 47h ago

Air Quality Index Trend

34h · 4 stn

View full history →

Ballwin'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▲

10.64 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for Ballwin?

Temperature & Precipitation

PM2.5 Trend

34h · 4 stations

PM2.510.64 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX5.9

High

Station readings (2 stations within 25 km)

10.64

Median

10.8

Average

9.6

Low

12.0

High

PM2.5 µg/m³ · Model: 10.85 · Bias: +0.2

What is the 7-day forecast for Ballwin?

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 Ballwin?

Ladue, Missouri, USA

18.1 km PM2.5: 14.0 µg/m³

Ladue, Missouri, USA

18.1 km PM2.5: 2.2 µg/m³

Arnold West, Missouri, USA

20.7 km PM2.5: 9.8 µg/m³

Forest Park, Missouri, USA

23.4 km PM2.5: 12.6 µg/m³

What cities are near Ballwin?

44 Manchester 40 Chesterfield 31 Wildwood 44 Kirkwood 42 Creve Coeur 43 Webster Groves 40 Maryland Heights 48 Concord 47 Affton 41 Overland

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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 2026-08-08T01:02 UTC.