Stay updated with real-time air quality in Barrington, 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)
38
Good
Barrington, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
32.46 μg/m³
0
55
155
255
425
605+
16.52 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
7.91 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Barrington, Illinois
Barrington, Illinois
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AQI 56
Moderate
12.28μg/m³
PM2.5
53.03μg/m³
PM10
17.17ppb
O3
0.59ppb
SO2
6.56ppb
NO2
0.19ppm
CO
AQI 62
Moderate
14.77μg/m³
PM2.5
66.06μg/m³
PM10
16.88ppb
O3
0.55ppb
SO2
8.02ppb
NO2
0.19ppm
CO
AQI 60
Moderate
13.72μg/m³
PM2.5
60.03μg/m³
PM10
17.01ppb
O3
0.55ppb
SO2
7.45ppb
NO2
0.19ppm
CO
AQI 56
Moderate
11.93μg/m³
PM2.5
53.09μg/m³
PM10
18.35ppb
O3
0.56ppb
SO2
5.70ppb
NO2
0.18ppm
CO
AQI 54
Moderate
10.60μg/m³
PM2.5
47.00μg/m³
PM10
17.14ppb
O3
0.59ppb
SO2
6.13ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.22μg/m³
PM2.5
56.72μg/m³
PM10
16.62ppb
O3
0.60ppb
SO2
6.51ppb
NO2
0.19ppm
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 Barrington, Illinois is updated on an hourly basis.
The worst air quality in Barrington, Illinois was recorded at 04:00:00 on 2025-12-10.
The best air quality in Barrington, Illinois was recorded at 08:00:00 on 2025-12-09.
The real-time air quality index in Barrington, Illinois is 58, currently categorized as Moderate.
The most common pollutant in Barrington, Illinois is PM2.5.
If the air quality in Barrington, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Barrington, Illinois at present are 13.014 μg/m3.
The current PM10 levels in Barrington, Illinois are 54.038 μg/m3.
The current carbon monoxide (CO) level in Barrington, Illinois is 0.19 ppm.
The current sulfur dioxide (SO2) levels in Barrington, Illinois are 0.574 ppb.
The current ozone (O3) levels at Barrington, Illinois is 17.148 ppm.
The current nitrogen dioxide (NO2) levels at Barrington, Illinois is 6.606 ppb.
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