Air Quality in Ballwin, United States

Windy
8.3°C · 86.6% humidity
8.3°
Feels 2.5°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
25 7am
25
25
31 10am
29
28
27 1pm
27
26
26 4pm
26
25
25 7pm
34
34
34 10pm
34
34
34 1am
27
27
27 4am
25
25
AD 728×90

Air Quality Index Trend

45h · 3 stn

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. Current PM2.5 concentration in Ballwin is 1.5× the WHO annual guideline of 5 µg/m³.

86.6%
Humidity
64.1 km/h
Wind NNE
1027.1 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
31
7.55 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Ballwin?

Temperature & Precipitation

PM2.5 Trend

45h · 3 stations
PM2.57.55 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (2 stations within 25 km)
7.55
Median
7.55
Average
7.2
Low
7.9
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -1.3

What is the 7-day forecast for Ballwin?

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: 4.3°C

Where are air quality stations near Ballwin?

15
Arnold West, Missouri, USA
20.7 km PM2.5: 3.6 µg/m³
38
Arnold West, Missouri, USA
20.7 km PM2.5: 9.1 µg/m³
30
Forest Park, Missouri, USA
23.4 km PM2.5: 7.2 µg/m³

What cities are near Ballwin?

31 Manchester 27 Chesterfield 27 Wildwood 40 Kirkwood 46 Creve Coeur 44 Webster Groves 65 Maryland Heights 35 Concord 40 Affton 56 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 2026-05-29T15:04 UTC.