What is the air quality in Collinsville today?

The current Air Quality Index (AQI) in Collinsville is 45 (Good). PM2.5 concentration is 10.86 µg/m³.

What is the temperature in Collinsville right now?

The current temperature in Collinsville is 14.7°C (feels like 14.7°C). Humidity is 84.5% and wind speed is 40.8 km/h.

Is it safe to go outside in Collinsville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Collinsville, United States

Rain

14.7°C · 84.5% humidity

14.7°

Feels 14.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

3 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 3 stn

View full history →

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.

84.5%

Humidity

40.8 km/h

Wind E

1020.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

10.86 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Collinsville?

Temperature & Precipitation

PM2.5 Trend

45h · 3 stations

PM2.510.86 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (3 stations within 25 km)

10.86

Median

10.9

Average

9.8

Low

12.6

High

PM2.5 µg/m³ · Model: 8.2 · Bias: -2.7

What is the 7-day forecast for Collinsville?

10-20

13.5° 2.4°

0.06 mm

10-21

24.6° 12.5°

5.44 mm

10-22

21.8° 8.8°

2.19 mm

10-23

12.9° 7.4°

10.06 mm

10-24

25.3° 10.1°

10-25

17.2° 2.7°

10-26

25.6° 5.7°

0.06 mm

Both models agree Avg diff: 4.6°C

Where are air quality stations near Collinsville?

East St. Louis, Illinois, USA

16.6 km PM2.5: 10.1 µg/m³

East St. Louis, Illinois, USA

16.6 km PM2.5: 10.1 µg/m³

Branch Street, Missouri, USA

17.9 km PM2.5: 12.6 µg/m³

Blair Street, Missouri, USA

18.6 km PM2.5: 10.3 µg/m³

What cities are near Collinsville?

45 Fairview Heights 41 O'Fallon 45 Granite City 42 East Saint Louis 28 Edwardsville 45 Belleville 44 St. Louis 40 Spanish Lake 25 University City 37 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 2026-10-20T23:41 UTC.