What is the air quality in Granite City today?

The current Air Quality Index (AQI) in Granite City is 37 (Good). PM2.5 concentration is 8.94 µg/m³.

What is the temperature in Granite City right now?

The current temperature in Granite City is 29.8°C (feels like 32.7°C). Humidity is 50.0% and wind speed is 44.7 km/h.

Is it safe to go outside in Granite City?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 24.9 (Extreme).

Air Quality in Granite City, United States

Windy

29.8°C · 50.0% humidity

29.8°

Feels 32.7°

Good

Air quality is satisfactory. Enjoy outdoor activities.

4 stations

Nearby Monitoring Stations

AQI Forecast

54 11am

37 2pm

34 5pm

25 8pm

27 11pm

24 2am

24 5am

24 8am

Air Quality Index Trend

42h · 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.

50.0%

Humidity

44.7 km/h

Wind NE

1012.7 hPa

Pressure

24.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.94 µg/m³

PM10

20.55 µg/m³

050100150200300500

What is the weather forecast for Granite City?

Temperature & Precipitation

PM2.5 Trend

42h · 6 stations

PM2.58.94 µg/m³ ✓ WHO

Good

PM1020.55 µg/m³

Good

UV INDEX24.9

Extreme

Station readings (4 stations within 25 km)

8.94

Median

7.5

Average

4.8

Low

10.1

High

PM2.5 µg/m³ · Model: 8.2 · Bias: -0.7

What is the 7-day forecast for Granite City?

07-21

32.6° 24.2°

07-22

28.6° 22.4°

07-23

21.4° 20.4°

0.31 mm

07-24

30.3° 19.8°

0.56 mm

07-25

27.0° 20.3°

2.81 mm

07-26

33.3° 24.1°

1.25 mm

07-27

31.2° 22.7°

Both models agree Avg diff: 3.6°C

Where are air quality stations near Granite City?

East St. Louis, Illinois, USA

10.0 km PM2.5: 21.6 µg/m³

Forest Park, Missouri, USA

13.9 km PM2.5: 7.2 µg/m³

What cities are near Granite City?

41 East Saint Louis 39 St. Louis 32 Spanish Lake 28 Ferguson 42 Collinsville 23 University City 22 Clayton 29 Florissant 24 Overland 42 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 2026-07-21T19:47 UTC.