Air Quality in Mount Vernon, United States

Windy
10.1°C · 66.1% humidity
10.1°
Feels 10.1°
58
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
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Air Quality Index Trend

18h · 1 stn

Mount Vernon'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 Mount Vernon is 1.0× the WHO 24-hour guideline of 15 µg/m³.

66.1%
Humidity
103.8 km/h
Wind N
1023.7 hPa
Pressure
0.0
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
58
15.26 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Mount Vernon?

Temperature & Precipitation

PM2.5 Trend

18h · 1 station
PM2.515.26 µg/m³ ✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.0
Low

What is the 7-day forecast for Mount Vernon?

10-20
12.8° 2.2°
0.06 mm
10-21
23.1° 11.7°
1.94 mm
10-22
22.7° 8.0°
2.94 mm
10-23
11.5° 7.0°
5.81 mm
10-24
24.2° 10.0°
10-25
17.0° 2.1°
10-26
24.8° 6.6°
Both models agree Avg diff: 3.9°C

What cities are near Mount Vernon?

54 Marion 54 Carbondale 43 O'Fallon 37 Belleville 37 Fairview Heights 35 Collinsville 35 Edwardsville 41 East Saint Louis 31 Granite City 34 St. Louis
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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 2026-10-20T20:56 UTC.