Stay updated with real-time air quality in Swansea, Wales 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)
23
Good
Swansea, Wales
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.02 μg/m³
0
55
155
255
425
605+
25.32 ppb
0
55
71
86
201
201+
0.38 ppb
0
36
76
186
605
1005+
1.06 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Swansea, Wales
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AQI 27
Good
2.74μg/m³
PM2.5
12.16μg/m³
PM10
29.15ppb
O3
0.46ppb
SO2
1.12ppb
NO2
0.36ppm
CO
AQI 29
Good
3.74μg/m³
PM2.5
14.35μg/m³
PM10
30.65ppb
O3
0.40ppb
SO2
1.54ppb
NO2
0.36ppm
CO
AQI 29
Good
3.99μg/m³
PM2.5
14.98μg/m³
PM10
31.11ppb
O3
0.38ppb
SO2
1.64ppb
NO2
0.36ppm
CO
AQI 26
Good
3.38μg/m³
PM2.5
11.41μg/m³
PM10
27.58ppb
O3
0.50ppb
SO2
1.01ppb
NO2
0.36ppm
CO
AQI 29
Good
3.88μg/m³
PM2.5
14.65μg/m³
PM10
30.86ppb
O3
0.39ppb
SO2
1.61ppb
NO2
0.36ppm
CO
AQI 29
Good
3.82μg/m³
PM2.5
14.39μg/m³
PM10
30.66ppb
O3
0.40ppb
SO2
1.61ppb
NO2
0.36ppm
CO
Air quality data and pollutant measurements for Wales, UK 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, Wales is updated every hour.
The worst air quality in Swansea, Wales in the last 24 hours was observed at 07:00:00 on 2025-09-16.
In the last 24 hrs, the best air quality in Swansea, Wales was observed at 02:00:00 on 2025-09-17.
The current air quality in Swansea, Wales is 28, categorized as Good based on real-time data.
The most common pollutant in Swansea, Wales is O3.
If the air quality in Swansea, Wales is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Swansea, Wales is 2.409 μg/m3.
The current PM10 concentration at Swansea, Wales is 11.014 μg/m3.
The current carbon monoxide (CO) concentration at Swansea, Wales is 0.37 ppm.
The current sulfur dioxide (SO2) concentration at Swansea, Wales is 0.452 ppb.
The current ozone (O3) concentration at Swansea, Wales is 29.906 ppm.
The current nitrogen dioxide (NO2) concentration at Swansea, Wales is 1.595 ppb.
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