Air Quality in Collinsville, United States

Windy
24.5°C · 57.6% humidity
24.5°
Feels 24.5°
54
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast
54 10pm
34
34
54 1am
48
44
41 4am
39
38
37 7am
36
55
55 10am
55
55
54 1pm
34
34
34 4pm
34
34
34 7pm
54
54
AD 728×90

Air Quality Index Trend

38h · 1 stn

Collinsville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

57.6%
Humidity
59.0 km/h
Wind NE
1017.8 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
54
13.5 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Collinsville?

Temperature & Precipitation

PM2.5 Trend

38h · 1 station
PM2.513.5 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (1 station within 25 km)
13.5
Median
13.5
Average
13.5
Low
13.5
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -2.7

What is the 7-day forecast for Collinsville?

08-03
28.9° 19.8°
08-04
32.9° 17.5°
08-05
33.4° 13.8°
50.0 mm
08-06
38.1° 20.5°
5.12 mm
08-07
28.3° 19.4°
08-08
36.2° 24.7°
0.56 mm
08-09
31.9° 26.0°
Both models agree Avg diff: 3.2°C

Where are air quality stations near Collinsville?

44
East St. Louis, Illinois, USA
16.6 km PM2.5: 10.6 µg/m³
72
Branch Street, Missouri, USA
17.9 km PM2.5: 22.1 µg/m³

What cities are near Collinsville?

54 Fairview Heights 54 O'Fallon 52 Granite City 54 East Saint Louis 33 Edwardsville 54 Belleville 53 St. Louis 48 Spanish Lake 41 University City 44 Ferguson
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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 2026-08-08T06:32 UTC.