Stay updated with real-time air quality in Elgin, 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)
44
Good
Elgin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
35.29 μg/m³
0
55
155
255
425
605+
42.10 ppb
0
55
71
86
201
201+
1.32 ppb
0
36
76
186
605
1005+
4.73 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Elgin, Illinois
Elgin, Illinois
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AQI 44
Good
8.06μg/m³
PM2.5
35.39μg/m³
PM10
42.08ppb
O3
1.32ppb
SO2
4.73ppb
NO2
0.14ppm
CO
AQI 40
Good
6.45μg/m³
PM2.5
28.94μg/m³
PM10
43.14ppb
O3
1.44ppb
SO2
4.88ppb
NO2
0.14ppm
CO
AQI 40
Good
7.24μg/m³
PM2.5
31.90μg/m³
PM10
42.66ppb
O3
1.36ppb
SO2
4.75ppb
NO2
0.14ppm
CO
AQI 40
Good
6.37μg/m³
PM2.5
27.96μg/m³
PM10
43.11ppb
O3
1.28ppb
SO2
4.72ppb
NO2
0.14ppm
CO
AQI 39
Good
6.19μg/m³
PM2.5
24.93μg/m³
PM10
41.91ppb
O3
1.20ppb
SO2
4.62ppb
NO2
0.14ppm
CO
AQI 40
Good
6.45μg/m³
PM2.5
28.94μg/m³
PM10
43.14ppb
O3
1.44ppb
SO2
4.88ppb
NO2
0.14ppm
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 Elgin, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Elgin, Illinois was at its worst at 01:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Elgin, Illinois was observed at 09:00:00 on 2026-07-22.
As of now, the AQI in Elgin, Illinois is 44, indicating Good conditions.
Elgin, Illinois air has the highest levels of PM2.5.
Poor air quality in Elgin, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Elgin, Illinois are currently 8.036 μg/m3.
The PM10 concentration in Elgin, Illinois is 35.289 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Elgin, Illinois is 0.138 ppm.
Currently, Elgin, Illinois has a sulfur dioxide (SO2) concentration of 1.318 ppb.
The current ozone (O3) level in Elgin, Illinois at the moment is 42.102 ppm.
Nitrogen dioxide (NO2) level in Elgin, Illinois at the moment is 4.728 ppb.
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