Stay updated with real-time air quality in Winfield, 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)
16
Good
Winfield, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.38 μg/m³
0
55
155
255
425
605+
16.86 ppb
0
55
71
86
201
201+
0.68 ppb
0
36
76
186
605
1005+
4.32 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Winfield, Illinois
Winfield, Illinois
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AQI 22
Good
3.56μg/m³
PM2.5
15.23μg/m³
PM10
21.46ppb
O3
0.52ppb
SO2
3.26ppb
NO2
0.19ppm
CO
AQI 27
Good
4.60μg/m³
PM2.5
21.51μg/m³
PM10
19.37ppb
O3
0.53ppb
SO2
3.13ppb
NO2
0.19ppm
CO
AQI 27
Good
4.56μg/m³
PM2.5
20.81μg/m³
PM10
19.51ppb
O3
0.52ppb
SO2
3.17ppb
NO2
0.19ppm
CO
AQI 27
Good
4.78μg/m³
PM2.5
21.23μg/m³
PM10
19.23ppb
O3
0.52ppb
SO2
3.17ppb
NO2
0.19ppm
CO
AQI 27
Good
4.69μg/m³
PM2.5
22.15μg/m³
PM10
19.16ppb
O3
0.53ppb
SO2
3.10ppb
NO2
0.19ppm
CO
AQI 45
Good
4.67μg/m³
PM2.5
48.77μg/m³
PM10
19.08ppb
O3
0.52ppb
SO2
3.15ppb
NO2
0.19ppm
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 Winfield, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Winfield, Illinois was at its worst at 12:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Winfield, Illinois was observed at 06:00:00 on 2025-09-05.
As of now, the AQI in Winfield, Illinois is 22, indicating Good conditions.
Winfield, Illinois air has the highest levels of PM2.5.
Poor air quality in Winfield, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Winfield, Illinois are currently 3.823 μg/m3.
The PM10 concentration in Winfield, Illinois is 16.889 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Winfield, Illinois is 0.175 ppm.
Currently, Winfield, Illinois has a sulfur dioxide (SO2) concentration of 0.538 ppb.
The current ozone (O3) level in Winfield, Illinois at the moment is 21.385 ppm.
Nitrogen dioxide (NO2) level in Winfield, Illinois at the moment is 3.221 ppb.
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