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
4.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.00 μg/m³
0
55
155
255
425
605+
23.77 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
1.31 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Macomb, Illinois
Macomb, Illinois
Scroll To Air Quality MapLoading...
AQI 27
Good
5.30μg/m³
PM2.5
22.86μg/m³
PM10
24.81ppb
O3
0.32ppb
SO2
1.26ppb
NO2
0.15ppm
CO
AQI 23
Good
4.07μg/m³
PM2.5
20.07μg/m³
PM10
24.98ppb
O3
0.33ppb
SO2
2.60ppb
NO2
0.20ppm
CO
AQI 27
Good
4.59μg/m³
PM2.5
20.00μg/m³
PM10
22.80ppb
O3
0.33ppb
SO2
1.37ppb
NO2
0.15ppm
CO
AQI 27
Good
5.26μg/m³
PM2.5
23.00μg/m³
PM10
25.80ppb
O3
0.34ppb
SO2
1.72ppb
NO2
0.16ppm
CO
AQI 22
Good
4.18μg/m³
PM2.5
19.73μg/m³
PM10
17.09ppb
O3
0.33ppb
SO2
1.97ppb
NO2
0.23ppm
CO
AQI 23
Good
3.92μg/m³
PM2.5
20.98μg/m³
PM10
24.64ppb
O3
0.35ppb
SO2
2.78ppb
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 11:00:00 on 2026-01-22.
The best air quality in Macomb, Illinois was recorded at 02:00:00 on 2026-01-23.
The real-time air quality index in Macomb, Illinois is 27, currently categorized as Good.
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 4.832 μg/m3.
The current PM10 levels in Macomb, Illinois are 21 μg/m3.
The current carbon monoxide (CO) level in Macomb, Illinois is 0.151 ppm.
The current sulfur dioxide (SO2) levels in Macomb, Illinois are 0.331 ppb.
The current ozone (O3) levels at Macomb, Illinois is 23.768 ppm.
The current nitrogen dioxide (NO2) levels at Macomb, Illinois is 1.311 ppb.
All Rights Reserved © Ambee Inc. 2025