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)
33
Good
Montgomery, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.54 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.27 μg/m³
0
55
155
255
425
605+
29.98 ppb
0
55
71
86
201
201+
1.39 ppb
0
36
76
186
605
1005+
6.25 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montgomery, Illinois
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AQI 28
Good
5.31μg/m³
PM2.5
23.02μg/m³
PM10
29.60ppb
O3
0.99ppb
SO2
5.14ppb
NO2
0.17ppm
CO
AQI 33
Good
5.79μg/m³
PM2.5
29.73μg/m³
PM10
29.47ppb
O3
0.96ppb
SO2
5.05ppb
NO2
0.17ppm
CO
AQI 28
Good
5.42μg/m³
PM2.5
23.52μg/m³
PM10
29.60ppb
O3
1.00ppb
SO2
5.15ppb
NO2
0.17ppm
CO
AQI 33
Good
5.74μg/m³
PM2.5
29.55μg/m³
PM10
29.43ppb
O3
0.94ppb
SO2
4.95ppb
NO2
0.17ppm
CO
AQI 33
Good
5.58μg/m³
PM2.5
24.20μg/m³
PM10
29.60ppb
O3
1.00ppb
SO2
5.16ppb
NO2
0.17ppm
CO
AQI 28
Good
5.22μg/m³
PM2.5
23.07μg/m³
PM10
29.86ppb
O3
1.05ppb
SO2
4.98ppb
NO2
0.17ppm
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 2026-01-23.
In the last 24 hours, the best air quality in Montgomery, Illinois was observed at 12:00:00 on 2026-01-23.
As of now, the AQI in Montgomery, Illinois is 33, 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 5.539 μg/m3.
The PM10 concentration in Montgomery, Illinois is 24.269 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Montgomery, Illinois is 0.219 ppm.
Currently, Montgomery, Illinois has a sulfur dioxide (SO2) concentration of 1.393 ppb.
The current ozone (O3) level in Montgomery, Illinois at the moment is 29.978 ppm.
Nitrogen dioxide (NO2) level in Montgomery, Illinois at the moment is 6.247 ppb.
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