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)
52
Moderate
Swansea, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
58.09 μg/m³
0
55
155
255
425
605+
44.59 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
5.47 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Swansea, Illinois
Swansea, Illinois
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AQI 56
Moderate
10.47μg/m³
PM2.5
65.30μg/m³
PM10
44.49ppb
O3
0.69ppb
SO2
5.44ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.20μg/m³
PM2.5
50.64μg/m³
PM10
44.54ppb
O3
0.65ppb
SO2
5.48ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.26μg/m³
PM2.5
50.54μg/m³
PM10
44.24ppb
O3
0.67ppb
SO2
5.43ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.26μg/m³
PM2.5
50.54μg/m³
PM10
44.24ppb
O3
0.67ppb
SO2
5.43ppb
NO2
0.23ppm
CO
AQI 52
Moderate
10.43μg/m³
PM2.5
49.08μg/m³
PM10
48.61ppb
O3
0.61ppb
SO2
5.64ppb
NO2
0.23ppm
CO
AQI 44
Good
8.18μg/m³
PM2.5
36.84μg/m³
PM10
40.07ppb
O3
0.61ppb
SO2
5.45ppb
NO2
0.22ppm
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 08:00:00 on 2026-04-23.
In the last 24 hrs, the best air quality in Swansea, Illinois was observed at 11:00:00 on 2026-04-23.
The current air quality in Swansea, Illinois is 52, categorized as Moderate based on real-time data.
The most common pollutant in Swansea, Illinois is PM10.
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 10.342 μg/m3.
The current PM10 concentration at Swansea, Illinois is 58.09 μg/m3.
The current carbon monoxide (CO) concentration at Swansea, Illinois is 0.23 ppm.
The current sulfur dioxide (SO2) concentration at Swansea, Illinois is 0.671 ppb.
The current ozone (O3) concentration at Swansea, Illinois is 44.594 ppm.
The current nitrogen dioxide (NO2) concentration at Swansea, Illinois is 5.472 ppb.
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