Stay updated with real-time air quality in Northbrook, 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)
49
Good
Northbrook, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.58 μg/m³
0
55
155
255
425
605+
27.82 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
5.98 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Northbrook, Illinois
Northbrook, Illinois
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AQI 52
Moderate
9.93μg/m³
PM2.5
35.94μg/m³
PM10
22.68ppb
O3
0.54ppb
SO2
5.62ppb
NO2
0.20ppm
CO
AQI 58
Moderate
12.73μg/m³
PM2.5
53.84μg/m³
PM10
21.09ppb
O3
0.54ppb
SO2
5.62ppb
NO2
0.20ppm
CO
AQI 44
Good
8.04μg/m³
PM2.5
24.30μg/m³
PM10
23.56ppb
O3
0.54ppb
SO2
5.63ppb
NO2
0.20ppm
CO
AQI 54
Moderate
11.20μg/m³
PM2.5
43.49μg/m³
PM10
23.05ppb
O3
0.51ppb
SO2
5.56ppb
NO2
0.21ppm
CO
AQI 58
Moderate
12.58μg/m³
PM2.5
52.81μg/m³
PM10
21.06ppb
O3
0.53ppb
SO2
5.60ppb
NO2
0.20ppm
CO
AQI 58
Moderate
13.20μg/m³
PM2.5
56.65μg/m³
PM10
20.75ppb
O3
0.53ppb
SO2
5.60ppb
NO2
0.20ppm
CO
Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Northbrook, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Northbrook, Illinois was at its worst at 03:00:00 on 2025-07-24.
In the last 24 hours, the best air quality in Northbrook, Illinois was observed at 04:00:00 on 2025-07-24.
As of now, the AQI in Northbrook, Illinois is 44, indicating Good conditions.
Northbrook, Illinois air has the highest levels of PM2.5.
Poor air quality in Northbrook, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Northbrook, Illinois are currently 8.344 μg/m3.
The PM10 concentration in Northbrook, Illinois is 27.467 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Northbrook, Illinois is 0.184 ppm.
Currently, Northbrook, Illinois has a sulfur dioxide (SO2) concentration of 0.791 ppb.
The current ozone (O3) level in Northbrook, Illinois at the moment is 27.427 ppm.
Nitrogen dioxide (NO2) level in Northbrook, Illinois at the moment is 7.039 ppb.
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