Stay updated with real-time air quality in Macomb, 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)
52
Moderate
Macomb, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.71 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
43.00 μg/m³
0
55
155
255
425
605+
14.10 ppb
0
55
71
86
201
201+
0.83 ppb
0
36
76
186
605
1005+
4.07 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Macomb, Illinois
Macomb, Illinois
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AQI 52
Moderate
10.21μg/m³
PM2.5
44.91μg/m³
PM10
13.22ppb
O3
0.89ppb
SO2
4.19ppb
NO2
0.17ppm
CO
AQI 27
Good
5.45μg/m³
PM2.5
18.70μg/m³
PM10
23.73ppb
O3
0.43ppb
SO2
4.54ppb
NO2
0.17ppm
CO
AQI 49
Good
9.35μg/m³
PM2.5
41.87μg/m³
PM10
15.70ppb
O3
0.83ppb
SO2
3.76ppb
NO2
0.17ppm
CO
AQI 54
Moderate
10.53μg/m³
PM2.5
46.52μg/m³
PM10
14.44ppb
O3
0.91ppb
SO2
5.34ppb
NO2
0.18ppm
CO
AQI 31
Good
4.49μg/m³
PM2.5
27.41μg/m³
PM10
32.96ppb
O3
0.77ppb
SO2
3.13ppb
NO2
0.16ppm
CO
AQI 38
Good
6.54μg/m³
PM2.5
30.34μg/m³
PM10
23.50ppb
O3
0.43ppb
SO2
5.03ppb
NO2
0.17ppm
CO
Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Macomb, Illinois is updated on an hourly basis.
The worst air quality in Macomb, Illinois was recorded at 02:00:00 on 2026-09-06.
The best air quality in Macomb, Illinois was recorded at 07:00:00 on 2026-09-07.
The real-time air quality index in Macomb, Illinois is 52, currently categorized as Moderate.
The most common pollutant in Macomb, Illinois is PM2.5.
If the air quality in Macomb, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Macomb, Illinois at present are 9.71 μg/m3.
The current PM10 levels in Macomb, Illinois are 43 μg/m3.
The current carbon monoxide (CO) level in Macomb, Illinois is 0.169 ppm.
The current sulfur dioxide (SO2) levels in Macomb, Illinois are 0.835 ppb.
The current ozone (O3) levels at Macomb, Illinois is 14.097 ppm.
The current nitrogen dioxide (NO2) levels at Macomb, Illinois is 4.065 ppb.
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