Air Quality in Collinsville, United States
Partly Cloudy
30.0°C · 55.4% humidity
30.0°
Feels 33.8°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Collinsville's air quality — share it
AQI Forecast
25
8am
25
25
51
11am
44
38
35
2pm
32
30
29
5pm
28
27
28
8pm
28
28
27
11pm
27
27
27
2am
25
25
25
5am
25
25
Air Quality Index Trend
46h · 4 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. Current PM2.5 concentration in Collinsville is 2.5× the WHO annual guideline of 5 µg/m³.
55.4%
Humidity
33.5 km/h
Wind N
1020.2 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
12.25 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Collinsville?
Temperature & Precipitation
PM2.5 Trend
46h · 4 stationsPM2.512.25 µg/m³
✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX14.9
Extreme
Station readings (2 stations within 25 km)
12.25
Median
12.5
Average
9.1
Low
15.9
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -6.0
What is the 7-day forecast for Collinsville?
05-29
30.0° 9.0°
1.69 mm
05-30
29.3° 19.2°
1.44 mm
05-31
31.4° 12.6°
06-01
29.7° 17.5°
06-02
26.0° 13.7°
0.06 mm
06-03
29.7° 24.2°
0.88 mm
06-04
28.3° 19.6°
2.38 mm
Both models agree
Avg diff: 4.6°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 2026-05-29T16:18 UTC.