Air Quality in Granite City, United States

Windy
25.6°C · 47.5% humidity
25.6°
Feels 25.6°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
62 6pm
62
62
52 9pm
55
37
38 12am
39
40
41 3am
41
41
42 6am
42
42
62 9am
62
62
62 12pm
62
42
42 3pm
42
42
Station readings 48h ago
AQI 42
PM2.5 10.0 µg/m³ · 48h ago
AD 728×90

Air Quality Index Trend

36h · 6 stn

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.

47.5%
Humidity
56.4 km/h
Wind NE
1017.7 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
52
12.61 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Granite City?

Temperature & Precipitation

PM2.5 Trend

36h · 6 stations
PM2.512.61 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (2 stations within 25 km)
12.61
Median
11.55
Average
9.6
Low
13.5
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -1.8

What is the 7-day forecast for Granite City?

08-03
30.4° 20.9°
08-04
35.9° 19.3°
08-05
36.1° 16.1°
25.81 mm
08-06
40.2° 20.5°
3.5 mm
08-07
33.4° 21.2°
08-08
37.5° 25.9°
1.44 mm
08-09
35.3° 28.0°
Both models agree Avg diff: 3.5°C

Where are air quality stations near Granite City?

50
Blair Street, Missouri, USA
6.6 km PM2.5: 12.0 µg/m³
42
East St. Louis, Illinois, USA
10.0 km PM2.5: 10.1 µg/m³
43
Forest Park, Missouri, USA
13.9 km PM2.5: 10.3 µg/m³
55
Ladue, Missouri, USA
18.4 km PM2.5: 14.0 µg/m³
34
Ladue, Missouri, USA
18.4 km PM2.5: 8.2 µg/m³

What cities are near Granite City?

54 East Saint Louis 53 St. Louis 48 Spanish Lake 44 Ferguson 54 Collinsville 41 University City 40 Clayton 45 Florissant 41 Overland 54 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 2026-08-08T02:09 UTC.