Stay updated with real-time air quality in Swansea, 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)
64
Moderate
Swansea, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
15.85 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.88 μg/m³
0
55
155
255
425
605+
16.24 ppb
0
55
71
86
201
201+
0.99 ppb
0
36
76
186
605
1005+
10.38 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Swansea, Illinois
Swansea, Illinois
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AQI 64
Moderate
16.47μg/m³
PM2.5
39.89μg/m³
PM10
16.23ppb
O3
0.97ppb
SO2
10.54ppb
NO2
0.28ppm
CO
AQI 64
Moderate
15.76μg/m³
PM2.5
48.82μg/m³
PM10
16.24ppb
O3
1.00ppb
SO2
10.06ppb
NO2
0.28ppm
CO
AQI 66
Moderate
16.77μg/m³
PM2.5
68.59μg/m³
PM10
16.21ppb
O3
0.98ppb
SO2
10.06ppb
NO2
0.28ppm
CO
AQI 66
Moderate
16.77μg/m³
PM2.5
68.59μg/m³
PM10
16.21ppb
O3
0.98ppb
SO2
10.06ppb
NO2
0.28ppm
CO
AQI 64
Moderate
16.34μg/m³
PM2.5
57.79μg/m³
PM10
16.21ppb
O3
1.00ppb
SO2
10.72ppb
NO2
0.28ppm
CO
AQI 69
Moderate
19.20μg/m³
PM2.5
84.00μg/m³
PM10
17.25ppb
O3
1.06ppb
SO2
10.64ppb
NO2
0.29ppm
CO
Air quality data and pollutant measurements for Illinois, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Swansea, Illinois is updated every hour.
The worst air quality in Swansea, Illinois in the last 24 hours was observed at 02:00:00 on 2025-12-06.
In the last 24 hrs, the best air quality in Swansea, Illinois was observed at 10:00:00 on 2025-12-06.
The current air quality in Swansea, Illinois is 64, categorized as Moderate based on real-time data.
The most common pollutant in Swansea, Illinois is PM2.5.
If the air quality in Swansea, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Swansea, Illinois is 15.85 μg/m3.
The current PM10 concentration at Swansea, Illinois is 48.882 μg/m3.
The current carbon monoxide (CO) concentration at Swansea, Illinois is 0.283 ppm.
The current sulfur dioxide (SO2) concentration at Swansea, Illinois is 0.989 ppb.
The current ozone (O3) concentration at Swansea, Illinois is 16.242 ppm.
The current nitrogen dioxide (NO2) concentration at Swansea, Illinois is 10.377 ppb.
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