Air Quality in Collinsville, United States
Partly Cloudy
28.2°C · 61.1% humidity
28.2°
Feels 31.9°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Collinsville's air quality — share it
AQI Forecast
54
8am
54
54
35
11am
40
44
27
2pm
29
30
31
5pm
32
26
24
8pm
24
25
27
11pm
25
25
24
2am
24
24
24
5am
24
24
Air Quality Index Trend
36h · 3 stnCollinsville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
61.1%
Humidity
39.7 km/h
Wind ENE
1012.9 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.4 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Collinsville?
Temperature & Precipitation
PM2.5 Trend
36h · 3 stationsPM2.58.4 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX19.9
Extreme
Station readings (1 station within 25 km)
8.4
Median
8.4
Average
8.4
Low
8.4
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +2.5
What is the 7-day forecast for Collinsville?
07-21
29.5° 22.1°
07-22
27.2° 20.4°
0.06 mm
07-23
19.9° 18.4°
1.13 mm
07-24
29.5° 18.8°
1.19 mm
07-25
25.5° 19.9°
2.25 mm
07-26
30.4° 21.3°
1.81 mm
07-27
28.4° 21.2°
Both models agree
Avg diff: 4.1°C
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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 2026-07-21T16:52 UTC.