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)
44
Good
Mount Vernon, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.07 μg/m³
0
55
155
255
425
605+
26.38 ppb
0
55
71
86
201
201+
0.42 ppb
0
36
76
186
605
1005+
3.49 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Mount Vernon, Illinois
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AQI 30
Good
5.12μg/m³
PM2.5
19.31μg/m³
PM10
31.93ppb
O3
0.46ppb
SO2
2.80ppb
NO2
0.19ppm
CO
AQI 38
Good
7.21μg/m³
PM2.5
30.80μg/m³
PM10
24.86ppb
O3
0.46ppb
SO2
5.25ppb
NO2
0.18ppm
CO
AQI 33
Good
6.08μg/m³
PM2.5
28.92μg/m³
PM10
24.64ppb
O3
0.47ppb
SO2
5.18ppb
NO2
0.19ppm
CO
AQI 38
Good
6.66μg/m³
PM2.5
22.61μg/m³
PM10
23.70ppb
O3
0.46ppb
SO2
5.34ppb
NO2
0.18ppm
CO
AQI 38
Good
6.72μg/m³
PM2.5
18.82μg/m³
PM10
23.61ppb
O3
0.44ppb
SO2
6.53ppb
NO2
0.15ppm
CO
AQI 38
Good
6.72μg/m³
PM2.5
18.82μg/m³
PM10
23.61ppb
O3
0.44ppb
SO2
6.53ppb
NO2
0.15ppm
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, 2025-07-13.
The best air quality in Mount Vernon, Illinois was observed at 02:00:00 on 2025-07-14.
The air quality in Mount Vernon, Illinois right now is Good, with an AQI of 44.
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 7.807 μg/m3.
Mount Vernon, Illinois currently has a PM10 concentration of 32.071 μg/m3.
The current carbon monoxide (CO) level in Mount Vernon, Illinois is 0.154 ppm.
The current sulfur dioxide (SO2) concentration in Mount Vernon, Illinois is 0.42 ppb.
Mount Vernon, Illinois currently has an ozone (O3) concentration of 26.383 ppm.
The current level of nitrogen dioxide (NO2) in Mount Vernon, Illinois is 3.491 ppb.
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