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)
41
Good
Montgomery, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.99 μg/m³
0
55
155
255
425
605+
43.92 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
3.67 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montgomery, Illinois
Scroll To Air Quality MapLoading...
AQI 40
Good
5.82μg/m³
PM2.5
25.36μg/m³
PM10
43.31ppb
O3
0.73ppb
SO2
3.71ppb
NO2
0.14ppm
CO
AQI 42
Good
6.04μg/m³
PM2.5
19.69μg/m³
PM10
45.25ppb
O3
0.73ppb
SO2
3.22ppb
NO2
0.14ppm
CO
AQI 40
Good
5.94μg/m³
PM2.5
25.90μg/m³
PM10
43.32ppb
O3
0.73ppb
SO2
3.71ppb
NO2
0.14ppm
CO
AQI 47
Good
7.08μg/m³
PM2.5
21.14μg/m³
PM10
51.02ppb
O3
0.72ppb
SO2
3.23ppb
NO2
0.15ppm
CO
AQI 41
Good
6.16μg/m³
PM2.5
26.88μg/m³
PM10
43.70ppb
O3
0.73ppb
SO2
3.71ppb
NO2
0.14ppm
CO
AQI 43
Good
6.51μg/m³
PM2.5
29.53μg/m³
PM10
45.81ppb
O3
0.74ppb
SO2
3.33ppb
NO2
0.14ppm
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 2026-07-23.
In the last 24 hours, the best air quality in Montgomery, Illinois was observed at 05:00:00 on 2026-07-23.
As of now, the AQI in Montgomery, Illinois is 41, 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 5.925 μg/m3.
The PM10 concentration in Montgomery, Illinois is 25.992 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Montgomery, Illinois is 0.142 ppm.
Currently, Montgomery, Illinois has a sulfur dioxide (SO2) concentration of 0.733 ppb.
The current ozone (O3) level in Montgomery, Illinois at the moment is 43.918 ppm.
Nitrogen dioxide (NO2) level in Montgomery, Illinois at the moment is 3.673 ppb.
All Rights Reserved © Ambee Inc. 2025