Air Quality in Granite City, United States

Drizzle
19.8°C · 96.3% humidity
19.8°
Feels 19.8°
56
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
5 stations

Nearby Monitoring Stations

AQI Forecast
34 11am
34
34
56 2pm
50
45
42 5pm
40
38
37 8pm
36
36
35 11pm
35
28
27 2am
27
27
27 5am
34
34
25 8am
27
27
AD 728×90

Air Quality Index Trend

45h · 8 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.

96.3%
Humidity
44.1 km/h
Wind NE
1018.9 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
56
14.35 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Granite City?

Temperature & Precipitation

PM2.5 Trend

45h · 8 stations
PM2.514.35 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (5 stations within 25 km)
14.35
Median
12.34
Average
7.0
Low
18.3
High
PM2.5 µg/m³ · Model: 8.2 · Bias: -6.2

What is the 7-day forecast for Granite City?

09-05
26.6° 19.8°
3.37 mm
09-06
38.4° 18.6°
3.06 mm
09-07
29.2° 22.6°
09-08
25.2° 21.0°
9.88 mm
09-09
24.4° 16.2°
8.12 mm
09-10
32.1° 19.3°
0.38 mm
09-11
38.3° 20.3°
0.06 mm
Both models agree Avg diff: 5.9°C

Where are air quality stations near Granite City?

68
Branch Street, Missouri, USA
6.1 km PM2.5: 20.2 µg/m³
64
Forest Park, Missouri, USA
13.9 km PM2.5: 18.3 µg/m³
52
Forest Park, Missouri, USA
13.9 km PM2.5: 12.6 µg/m³
29
Ladue, Missouri, USA
18.4 km PM2.5: 7.0 µg/m³
35
Ladue, Missouri, USA
18.4 km PM2.5: 8.4 µg/m³

What cities are near Granite City?

56 East Saint Louis 57 St. Louis 52 Spanish Lake 49 Ferguson 58 Collinsville 48 University City 42 Clayton 49 Florissant 41 Overland 58 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 2026-09-05T19:27 UTC.