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)
49
Good
Elgin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.75 μg/m³
0
55
155
255
425
605+
32.93 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
12.10 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Elgin, Illinois
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AQI 21
Good
3.07μg/m³
PM2.5
12.58μg/m³
PM10
22.98ppb
O3
1.23ppb
SO2
12.66ppb
NO2
0.22ppm
CO
AQI 18
Good
3.13μg/m³
PM2.5
13.59μg/m³
PM10
18.75ppb
O3
1.54ppb
SO2
18.64ppb
NO2
0.24ppm
CO
AQI 18
Good
3.14μg/m³
PM2.5
13.95μg/m³
PM10
19.41ppb
O3
1.45ppb
SO2
17.04ppb
NO2
0.23ppm
CO
AQI 22
Good
3.02μg/m³
PM2.5
11.92μg/m³
PM10
23.93ppb
O3
1.32ppb
SO2
15.53ppb
NO2
0.24ppm
CO
AQI 27
Good
2.27μg/m³
PM2.5
9.52μg/m³
PM10
29.00ppb
O3
1.17ppb
SO2
12.11ppb
NO2
0.22ppm
CO
AQI 19
Good
3.17μg/m³
PM2.5
14.00μg/m³
PM10
17.70ppb
O3
1.63ppb
SO2
19.89ppb
NO2
0.24ppm
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 02:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Elgin, Illinois was observed at 03:00:00 on 2026-03-10.
As of now, the AQI in Elgin, Illinois is 49, 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 9.055 μg/m3.
The PM10 concentration in Elgin, Illinois is 40.752 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Elgin, Illinois is 0.31 ppm.
Currently, Elgin, Illinois has a sulfur dioxide (SO2) concentration of 0.648 ppb.
The current ozone (O3) level in Elgin, Illinois at the moment is 32.93 ppm.
Nitrogen dioxide (NO2) level in Elgin, Illinois at the moment is 12.1 ppb.
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