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)
139
Unhealthy for sensitive groups
Barrington, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
51.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
174.89 μg/m³
0
55
155
255
425
605+
36.46 ppb
0
55
71
86
201
201+
0.89 ppb
0
36
76
186
605
1005+
5.52 ppb
0
54
101
361
1250
2050+
0.33 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Barrington, Illinois
Barrington, Illinois
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AQI 139
Unhealthy for sensitive groups
50.95μg/m³
PM2.5
177.66μg/m³
PM10
42.55ppb
O3
0.89ppb
SO2
6.00ppb
NO2
0.33ppm
CO
AQI 122
Unhealthy for sensitive groups
43.52μg/m³
PM2.5
171.47μg/m³
PM10
42.08ppb
O3
0.98ppb
SO2
5.37ppb
NO2
0.33ppm
CO
AQI 137
Unhealthy for sensitive groups
50.12μg/m³
PM2.5
202.26μg/m³
PM10
35.75ppb
O3
0.97ppb
SO2
5.38ppb
NO2
0.33ppm
CO
AQI 139
Unhealthy for sensitive groups
50.55μg/m³
PM2.5
228.83μg/m³
PM10
46.83ppb
O3
0.92ppb
SO2
5.52ppb
NO2
0.33ppm
CO
AQI 134
Unhealthy for sensitive groups
48.50μg/m³
PM2.5
219.00μg/m³
PM10
44.00ppb
O3
0.84ppb
SO2
5.71ppb
NO2
0.33ppm
CO
AQI 134
Unhealthy for sensitive groups
48.93μg/m³
PM2.5
173.90μg/m³
PM10
39.88ppb
O3
0.87ppb
SO2
6.29ppb
NO2
0.33ppm
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 09:00:00 on 2025-06-05.
The best air quality in Barrington, Illinois was recorded at 10:00:00 on 2025-06-05.
The real-time air quality index in Barrington, Illinois is 139, currently categorized as Unhealthy for Sensitive Groups.
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 51.017 μg/m3.
The current PM10 levels in Barrington, Illinois are 174.889 μg/m3.
The current carbon monoxide (CO) level in Barrington, Illinois is 0.328 ppm.
The current sulfur dioxide (SO2) levels in Barrington, Illinois are 0.887 ppb.
The current ozone (O3) levels at Barrington, Illinois is 36.464 ppm.
The current nitrogen dioxide (NO2) levels at Barrington, Illinois is 5.519 ppb.
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