Air Quality in Granite City, United States
Windy
31.8°C · 44.1% humidity
31.8°
Feels 34.6°
52
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
4 stations
Nearby Monitoring Stations
Granite City's air quality — share it
AQI Forecast
25
7am
25
25
52
10am
44
39
35
1pm
32
30
29
4pm
28
27
26
7pm
28
28
27
10pm
27
27
27
1am
27
25
25
4am
25
25
Air Quality Index Trend
45h · 6 stnGranite 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. Current PM2.5 concentration in Granite City is 2.6× the WHO annual guideline of 5 µg/m³.
44.1%
Humidity
42.0 km/h
Wind N
1020.0 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
12.79 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Granite City?
Temperature & Precipitation
PM2.5 Trend
45h · 6 stationsPM2.512.79 µg/m³
✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (4 stations within 25 km)
12.79
Median
10.18
Average
8.2
Low
15.9
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -6.5
What is the 7-day forecast for Granite City?
05-29
31.8° 9.5°
2.06 mm
05-30
31.4° 19.8°
1.69 mm
05-31
32.8° 13.8°
06-01
31.5° 19.0°
06-02
27.3° 16.9°
06-03
30.9° 26.0°
0.94 mm
06-04
29.6° 20.3°
3.31 mm
Both models agree
Avg diff: 4.5°C
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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 2026-05-29T15:27 UTC.