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)
46
Good
Colwyn Bay, Wales
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.68 μg/m³
0
55
155
255
425
605+
49.99 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
0.98 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Colwyn Bay, Wales
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AQI 46
Good
4.60μg/m³
PM2.5
14.74μg/m³
PM10
50.18ppb
O3
0.16ppb
SO2
1.02ppb
NO2
0.11ppm
CO
AQI 46
Good
4.60μg/m³
PM2.5
14.63μg/m³
PM10
50.07ppb
O3
0.17ppb
SO2
1.01ppb
NO2
0.11ppm
CO
AQI 40
Good
4.42μg/m³
PM2.5
12.71μg/m³
PM10
42.79ppb
O3
0.34ppb
SO2
1.72ppb
NO2
0.10ppm
CO
AQI 38
Good
4.38μg/m³
PM2.5
12.18μg/m³
PM10
40.97ppb
O3
0.38ppb
SO2
1.91ppb
NO2
0.10ppm
CO
AQI 46
Good
4.95μg/m³
PM2.5
15.62μg/m³
PM10
50.26ppb
O3
0.20ppb
SO2
1.58ppb
NO2
0.11ppm
CO
AQI 38
Good
4.38μg/m³
PM2.5
11.24μg/m³
PM10
40.99ppb
O3
0.41ppb
SO2
1.72ppb
NO2
0.09ppm
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 09:00:00 on 2026-03-29.
The best air quality in Colwyn Bay, Wales was recorded at 01:00:00 on 2026-03-29.
The real-time air quality index in Colwyn Bay, Wales is 46, currently categorized as Good.
The most common pollutant in Colwyn Bay, Wales is O3.
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 4.57 μg/m3.
The current PM10 levels in Colwyn Bay, Wales are 14.682 μg/m3.
The current carbon monoxide (CO) level in Colwyn Bay, Wales is 0.109 ppm.
The current sulfur dioxide (SO2) levels in Colwyn Bay, Wales are 0.188 ppb.
The current ozone (O3) levels at Colwyn Bay, Wales is 49.993 ppm.
The current nitrogen dioxide (NO2) levels at Colwyn Bay, Wales is 0.984 ppb.
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