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)
27
Good
Macomb, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.02 μg/m³
0
55
155
255
425
605+
28.64 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
3.73 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Macomb, Illinois
Macomb, Illinois
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AQI 33
Good
6.10μg/m³
PM2.5
27.00μg/m³
PM10
24.89ppb
O3
0.40ppb
SO2
3.31ppb
NO2
0.14ppm
CO
AQI 52
Moderate
9.55μg/m³
PM2.5
38.59μg/m³
PM10
22.99ppb
O3
0.51ppb
SO2
4.39ppb
NO2
0.17ppm
CO
AQI 33
Good
6.23μg/m³
PM2.5
27.72μg/m³
PM10
26.95ppb
O3
0.42ppb
SO2
3.11ppb
NO2
0.14ppm
CO
AQI 27
Good
5.39μg/m³
PM2.5
23.37μg/m³
PM10
28.18ppb
O3
0.32ppb
SO2
4.06ppb
NO2
0.16ppm
CO
AQI 27
Good
5.32μg/m³
PM2.5
21.34μg/m³
PM10
24.99ppb
O3
0.60ppb
SO2
3.25ppb
NO2
0.20ppm
CO
AQI 49
Good
8.56μg/m³
PM2.5
25.76μg/m³
PM10
23.50ppb
O3
0.51ppb
SO2
4.46ppb
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 10:00:00 on 2026-06-07.
The best air quality in Macomb, Illinois was recorded at 12:00:00 on 2026-06-07.
The real-time air quality index in Macomb, Illinois is 27, currently categorized as Good.
The most common pollutant in Macomb, Illinois is O3.
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 5.445 μg/m3.
The current PM10 levels in Macomb, Illinois are 23.017 μg/m3.
The current carbon monoxide (CO) level in Macomb, Illinois is 0.141 ppm.
The current sulfur dioxide (SO2) levels in Macomb, Illinois are 0.412 ppb.
The current ozone (O3) levels at Macomb, Illinois is 28.641 ppm.
The current nitrogen dioxide (NO2) levels at Macomb, Illinois is 3.729 ppb.
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