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)
27
Good
Elgin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.59 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.97 μg/m³
0
55
155
255
425
605+
18.12 ppb
0
55
71
86
201
201+
0.76 ppb
0
36
76
186
605
1005+
19.89 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Elgin, Illinois
Elgin, Illinois
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AQI 27
Good
4.70μg/m³
PM2.5
20.59μg/m³
PM10
22.91ppb
O3
1.15ppb
SO2
16.47ppb
NO2
0.34ppm
CO
AQI 17
Good
3.25μg/m³
PM2.5
10.84μg/m³
PM10
18.11ppb
O3
1.17ppb
SO2
16.48ppb
NO2
0.35ppm
CO
AQI 22
Good
4.13μg/m³
PM2.5
18.16μg/m³
PM10
22.34ppb
O3
1.17ppb
SO2
16.40ppb
NO2
0.34ppm
CO
AQI 22
Good
3.55μg/m³
PM2.5
15.17μg/m³
PM10
23.59ppb
O3
1.20ppb
SO2
16.07ppb
NO2
0.35ppm
CO
AQI 22
Good
3.71μg/m³
PM2.5
17.04μg/m³
PM10
17.45ppb
O3
1.12ppb
SO2
16.50ppb
NO2
0.25ppm
CO
AQI 17
Good
3.25μg/m³
PM2.5
10.84μg/m³
PM10
18.11ppb
O3
1.17ppb
SO2
16.48ppb
NO2
0.35ppm
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 06:00:00 on 2025-10-23.
In the last 24 hours, the best air quality in Elgin, Illinois was observed at 09:00:00 on 2025-10-23.
As of now, the AQI in Elgin, Illinois is 11, 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 1.908 μg/m3.
The PM10 concentration in Elgin, Illinois is 8 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Elgin, Illinois is 0.178 ppm.
Currently, Elgin, Illinois has a sulfur dioxide (SO2) concentration of 0.665 ppb.
The current ozone (O3) level in Elgin, Illinois at the moment is 6.149 ppm.
Nitrogen dioxide (NO2) level in Elgin, Illinois at the moment is 10.337 ppb.
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