Stay updated with real-time air quality in Montgomery, 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)
49
Good
Montgomery, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.88 μg/m³
0
55
155
255
425
605+
24.76 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
11.38 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montgomery, Illinois
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AQI 49
Good
9.12μg/m³
PM2.5
40.88μg/m³
PM10
21.75ppb
O3
0.28ppb
SO2
9.57ppb
NO2
0.20ppm
CO
AQI 33
Good
6.24μg/m³
PM2.5
35.86μg/m³
PM10
26.26ppb
O3
0.29ppb
SO2
9.67ppb
NO2
0.20ppm
CO
AQI 49
Good
9.06μg/m³
PM2.5
40.53μg/m³
PM10
21.71ppb
O3
0.28ppb
SO2
9.52ppb
NO2
0.20ppm
CO
AQI 44
Good
7.73μg/m³
PM2.5
20.43μg/m³
PM10
24.26ppb
O3
0.24ppb
SO2
9.69ppb
NO2
0.19ppm
CO
AQI 49
Good
8.80μg/m³
PM2.5
39.17μg/m³
PM10
21.41ppb
O3
0.28ppb
SO2
9.46ppb
NO2
0.20ppm
CO
AQI 44
Good
7.79μg/m³
PM2.5
34.31μg/m³
PM10
22.50ppb
O3
0.29ppb
SO2
9.66ppb
NO2
0.20ppm
CO
Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Montgomery, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Montgomery, Illinois was at its worst at 07:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Montgomery, Illinois was observed at 03:00:00 on 2026-03-10.
As of now, the AQI in Montgomery, Illinois is 49, indicating Good conditions.
Montgomery, Illinois air has the highest levels of PM2.5.
Poor air quality in Montgomery, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Montgomery, Illinois are currently 8.687 μg/m3.
The PM10 concentration in Montgomery, Illinois is 38.878 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Montgomery, Illinois is 0.234 ppm.
Currently, Montgomery, Illinois has a sulfur dioxide (SO2) concentration of 0.304 ppb.
The current ozone (O3) level in Montgomery, Illinois at the moment is 24.76 ppm.
Nitrogen dioxide (NO2) level in Montgomery, Illinois at the moment is 11.385 ppb.
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