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)
56
Moderate
Swansea, Wales
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
28.00 μg/m³
0
55
155
255
425
605+
29.70 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
18.02 ppb
0
54
101
361
1250
2050+
0.53 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Swansea, Wales
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AQI 54
Moderate
10.72μg/m³
PM2.5
27.81μg/m³
PM10
21.29ppb
O3
0.60ppb
SO2
14.47ppb
NO2
0.63ppm
CO
AQI 49
Good
8.55μg/m³
PM2.5
28.59μg/m³
PM10
16.34ppb
O3
0.60ppb
SO2
8.05ppb
NO2
0.63ppm
CO
AQI 44
Good
8.02μg/m³
PM2.5
28.98μg/m³
PM10
14.85ppb
O3
0.60ppb
SO2
6.43ppb
NO2
0.63ppm
CO
AQI 52
Moderate
9.68μg/m³
PM2.5
23.02μg/m³
PM10
29.31ppb
O3
0.53ppb
SO2
3.27ppb
NO2
0.63ppm
CO
AQI 44
Good
8.20μg/m³
PM2.5
28.63μg/m³
PM10
15.70ppb
O3
0.61ppb
SO2
7.05ppb
NO2
0.63ppm
CO
AQI 44
Good
8.28μg/m³
PM2.5
28.24μg/m³
PM10
16.42ppb
O3
0.61ppb
SO2
7.38ppb
NO2
0.63ppm
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 02:00:00 on 2026-02-12.
In the last 24 hrs, the best air quality in Swansea, Wales was observed at 03:00:00 on 2026-02-11.
The current air quality in Swansea, Wales is 56, categorized as Moderate based on real-time data.
The most common pollutant in Swansea, Wales is PM2.5.
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 11.976 μg/m3.
The current PM10 concentration at Swansea, Wales is 27.995 μg/m3.
The current carbon monoxide (CO) concentration at Swansea, Wales is 0.531 ppm.
The current sulfur dioxide (SO2) concentration at Swansea, Wales is 0.496 ppb.
The current ozone (O3) concentration at Swansea, Wales is 29.699 ppm.
The current nitrogen dioxide (NO2) concentration at Swansea, Wales is 18.015 ppb.
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