Stay updated with real-time air quality in Mount Vernon, Illinois featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
56
Moderate
Mount Vernon, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
57.27 μg/m³
0
55
155
255
425
605+
35.99 ppb
0
55
71
86
201
201+
1.33 ppb
0
36
76
186
605
1005+
2.76 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Mount Vernon, Illinois
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AQI 38
Good
6.86μg/m³
PM2.5
29.79μg/m³
PM10
13.74ppb
O3
1.38ppb
SO2
7.35ppb
NO2
0.19ppm
CO
AQI 38
Good
6.60μg/m³
PM2.5
33.32μg/m³
PM10
18.57ppb
O3
0.59ppb
SO2
8.96ppb
NO2
0.18ppm
CO
AQI 38
Good
6.55μg/m³
PM2.5
34.12μg/m³
PM10
17.07ppb
O3
0.59ppb
SO2
8.76ppb
NO2
0.18ppm
CO
AQI 38
Good
6.83μg/m³
PM2.5
34.04μg/m³
PM10
16.70ppb
O3
0.57ppb
SO2
8.59ppb
NO2
0.18ppm
CO
AQI 38
Good
7.02μg/m³
PM2.5
30.61μg/m³
PM10
15.50ppb
O3
0.52ppb
SO2
10.87ppb
NO2
0.19ppm
CO
AQI 38
Good
7.02μg/m³
PM2.5
30.61μg/m³
PM10
15.50ppb
O3
0.52ppb
SO2
10.87ppb
NO2
0.19ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Mount Vernon, Illinois are available every hour.
Mount Vernon, Illinois experienced its worst air quality at 08:00:00, 2025-07-22.
The best air quality in Mount Vernon, Illinois was observed at 12:00:00 on 2025-07-21.
The air quality in Mount Vernon, Illinois right now is Good, with an AQI of 38.
In Mount Vernon, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in Mount Vernon, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Mount Vernon, Illinois currently has a PM2.5 concentration of 6.949 μg/m3.
Mount Vernon, Illinois currently has a PM10 concentration of 30.593 μg/m3.
The current carbon monoxide (CO) level in Mount Vernon, Illinois is 0.189 ppm.
The current sulfur dioxide (SO2) concentration in Mount Vernon, Illinois is 0.609 ppb.
Mount Vernon, Illinois currently has an ozone (O3) concentration of 12.142 ppm.
The current level of nitrogen dioxide (NO2) in Mount Vernon, Illinois is 10.893 ppb.
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