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)
22
Good
Montgomery, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.44 μg/m³
0
55
155
255
425
605+
23.92 ppb
0
55
71
86
201
201+
0.94 ppb
0
36
76
186
605
1005+
7.52 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montgomery, Illinois
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AQI 17
Good
1.49μg/m³
PM2.5
6.28μg/m³
PM10
18.24ppb
O3
0.55ppb
SO2
6.20ppb
NO2
0.23ppm
CO
AQI 15
Good
1.50μg/m³
PM2.5
6.73μg/m³
PM10
15.81ppb
O3
0.54ppb
SO2
5.47ppb
NO2
0.23ppm
CO
AQI 17
Good
1.54μg/m³
PM2.5
6.49μg/m³
PM10
18.35ppb
O3
0.55ppb
SO2
6.17ppb
NO2
0.23ppm
CO
AQI 16
Good
1.55μg/m³
PM2.5
9.32μg/m³
PM10
17.32ppb
O3
0.53ppb
SO2
5.45ppb
NO2
0.22ppm
CO
AQI 18
Good
1.62μg/m³
PM2.5
6.87μg/m³
PM10
18.53ppb
O3
0.56ppb
SO2
6.16ppb
NO2
0.23ppm
CO
AQI 16
Good
1.32μg/m³
PM2.5
5.21μg/m³
PM10
17.02ppb
O3
0.54ppb
SO2
6.23ppb
NO2
0.23ppm
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 03:00:00 on 2025-10-22.
In the last 24 hours, the best air quality in Montgomery, Illinois was observed at 01:00:00 on 2025-10-23.
As of now, the AQI in Montgomery, Illinois is 17, indicating Good conditions.
Montgomery, Illinois air has the highest levels of O3.
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 1.508 μg/m3.
The PM10 concentration in Montgomery, Illinois is 6.347 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Montgomery, Illinois is 0.23 ppm.
Currently, Montgomery, Illinois has a sulfur dioxide (SO2) concentration of 0.547 ppb.
The current ozone (O3) level in Montgomery, Illinois at the moment is 18.264 ppm.
Nitrogen dioxide (NO2) level in Montgomery, Illinois at the moment is 6.442 ppb.
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