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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.00 μg/m³
0
55
155
255
425
605+
43.67 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
1.42 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Macomb, Illinois
Macomb, Illinois
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AQI 38
Good
5.43μg/m³
PM2.5
23.05μg/m³
PM10
41.14ppb
O3
0.14ppb
SO2
1.31ppb
NO2
0.14ppm
CO
AQI 54
Moderate
11.03μg/m³
PM2.5
38.65μg/m³
PM10
48.58ppb
O3
2.20ppb
SO2
4.19ppb
NO2
0.21ppm
CO
AQI 40
Good
5.43μg/m³
PM2.5
23.29μg/m³
PM10
43.00ppb
O3
0.13ppb
SO2
1.30ppb
NO2
0.13ppm
CO
AQI 44
Good
7.62μg/m³
PM2.5
33.45μg/m³
PM10
41.97ppb
O3
0.71ppb
SO2
1.80ppb
NO2
0.15ppm
CO
AQI 49
Good
8.95μg/m³
PM2.5
27.82μg/m³
PM10
42.80ppb
O3
1.55ppb
SO2
3.14ppb
NO2
0.21ppm
CO
AQI 52
Moderate
10.36μg/m³
PM2.5
44.51μg/m³
PM10
50.22ppb
O3
2.08ppb
SO2
5.92ppb
NO2
0.20ppm
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 2026-04-23.
The best air quality in Macomb, Illinois was recorded at 11:00:00 on 2026-04-23.
The real-time air quality index in Macomb, Illinois is 41, 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 5.402 μg/m3.
The current PM10 levels in Macomb, Illinois are 23 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 0.308 ppb.
The current ozone (O3) levels at Macomb, Illinois is 43.671 ppm.
The current nitrogen dioxide (NO2) levels at Macomb, Illinois is 1.424 ppb.
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