Stay updated with real-time air quality in Colwyn Bay, 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)
34
Good
Colwyn Bay, Wales
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.82 μg/m³
0
55
155
255
425
605+
37.10 ppb
0
55
71
86
201
201+
0.12 ppb
0
36
76
186
605
1005+
0.89 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Colwyn Bay, Wales
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AQI 38
Good
6.63μg/m³
PM2.5
10.29μg/m³
PM10
24.14ppb
O3
0.32ppb
SO2
6.47ppb
NO2
0.14ppm
CO
AQI 38
Good
6.68μg/m³
PM2.5
10.28μg/m³
PM10
23.95ppb
O3
0.33ppb
SO2
6.51ppb
NO2
0.14ppm
CO
AQI 20
Good
3.19μg/m³
PM2.5
7.75μg/m³
PM10
22.04ppb
O3
0.42ppb
SO2
10.17ppb
NO2
0.20ppm
CO
AQI 20
Good
2.29μg/m³
PM2.5
6.88μg/m³
PM10
21.83ppb
O3
0.42ppb
SO2
10.68ppb
NO2
0.21ppm
CO
AQI 33
Good
6.21μg/m³
PM2.5
9.18μg/m³
PM10
25.18ppb
O3
0.28ppb
SO2
5.55ppb
NO2
0.14ppm
CO
AQI 19
Good
2.18μg/m³
PM2.5
6.80μg/m³
PM10
21.41ppb
O3
0.41ppb
SO2
8.94ppb
NO2
0.20ppm
CO
Air quality measurements for Wales, UK meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Colwyn Bay, Wales is updated on an hourly basis.
The worst air quality in Colwyn Bay, Wales was recorded at 11:00:00 on 2025-11-15.
The best air quality in Colwyn Bay, Wales was recorded at 05:00:00 on 2025-11-15.
The real-time air quality index in Colwyn Bay, Wales is 38, currently categorized as Good.
The most common pollutant in Colwyn Bay, Wales is PM2.5.
If the air quality in Colwyn Bay, Wales is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Colwyn Bay, Wales at present are 6.761 μg/m3.
The current PM10 levels in Colwyn Bay, Wales are 10.7 μg/m3.
The current carbon monoxide (CO) level in Colwyn Bay, Wales is 0.135 ppm.
The current sulfur dioxide (SO2) levels in Colwyn Bay, Wales are 0.359 ppb.
The current ozone (O3) levels at Colwyn Bay, Wales is 23.634 ppm.
The current nitrogen dioxide (NO2) levels at Colwyn Bay, Wales is 6.899 ppb.
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