What is the air quality in Granite City today?

The current Air Quality Index (AQI) in Granite City is 42 (Good). PM2.5 concentration is 9.96 µg/m³.

What is the temperature in Granite City right now?

The current temperature in Granite City is 15.2°C (feels like 15.2°C). Humidity is 49.3% and wind speed is 27.9 km/h.

Is it safe to go outside in Granite City?

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

Air Quality in Granite City, United States

Clear

15.2°C · 49.3% humidity

15.2°

Feels 15.2°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 6 stn

View full history →

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

49.3%

Humidity

27.9 km/h

Wind SSE

1024.5 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

9.96 µg/m³

PM10

41.2 µg/m³

050100150200300500

What is the weather forecast for Granite City?

Temperature & Precipitation

PM2.5 Trend

45h · 6 stations

PM2.59.96 µg/m³ ✓ WHO

Good

PM1041.2 µg/m³

Good

UV INDEX0.0

Low

Station readings (4 stations within 25 km)

9.96

Median

9.6

Average

8.2

Low

11.0

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +3.5

What is the 7-day forecast for Granite City?

10-21

24.8° 14.8°

5.62 mm

10-22

22.0° 11.2°

2.56 mm

10-23

13.9° 10.5°

9.31 mm

10-24

27.7° 13.9°

10-25

19.2° 4.6°

10-26

25.8° 6.3°

0.06 mm

10-27

15.3° 2.5°

Both models agree Avg diff: 4.6°C

Where are air quality stations near Granite City?

Branch Street, Missouri, USA

6.1 km PM2.5: 15.4 µg/m³

Branch Street, Missouri, USA

6.1 km PM2.5: 12.0 µg/m³

Blair Street, Missouri, USA

6.6 km PM2.5: 9.6 µg/m³

East St. Louis, Illinois, USA

10.0 km PM2.5: 11.5 µg/m³

Forest Park, Missouri, USA

13.9 km PM2.5: 6.0 µg/m³

Forest Park, Missouri, USA

13.9 km PM2.5: 9.6 µg/m³

What cities are near Granite City?

36 East Saint Louis 40 St. Louis 41 Spanish Lake 41 Ferguson 40 Collinsville 40 University City 40 Clayton 41 Florissant 40 Overland 39 Fairview Heights

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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 2026-10-21T04:02 UTC.