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)
33
Good
Colwyn Bay, Wales
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.57 μg/m³
0
55
155
255
425
605+
27.15 ppb
0
55
71
86
201
201+
0.07 ppb
0
36
76
186
605
1005+
1.11 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Colwyn Bay, Wales
Colwyn Bay, Wales
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AQI 33
Good
5.79μg/m³
PM2.5
12.63μg/m³
PM10
27.93ppb
O3
0.06ppb
SO2
1.17ppb
NO2
0.10ppm
CO
AQI 33
Good
5.96μg/m³
PM2.5
12.63μg/m³
PM10
27.92ppb
O3
0.06ppb
SO2
1.13ppb
NO2
0.10ppm
CO
AQI 64
Moderate
16.23μg/m³
PM2.5
34.35μg/m³
PM10
27.45ppb
O3
0.52ppb
SO2
4.02ppb
NO2
0.05ppm
CO
AQI 69
Moderate
19.08μg/m³
PM2.5
39.74μg/m³
PM10
28.11ppb
O3
0.63ppb
SO2
4.71ppb
NO2
0.03ppm
CO
AQI 27
Good
5.11μg/m³
PM2.5
11.73μg/m³
PM10
29.23ppb
O3
0.09ppb
SO2
1.40ppb
NO2
0.10ppm
CO
AQI 71
Moderate
19.77μg/m³
PM2.5
39.39μg/m³
PM10
30.00ppb
O3
0.66ppb
SO2
5.20ppb
NO2
0.03ppm
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 01:00:00 on 2026-07-18.
The best air quality in Colwyn Bay, Wales was recorded at 08:00:00 on 2026-07-18.
The real-time air quality index in Colwyn Bay, Wales is 33, 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 5.997 μg/m3.
The current PM10 levels in Colwyn Bay, Wales are 12.574 μg/m3.
The current carbon monoxide (CO) level in Colwyn Bay, Wales is 0.105 ppm.
The current sulfur dioxide (SO2) levels in Colwyn Bay, Wales are 0.065 ppb.
The current ozone (O3) levels at Colwyn Bay, Wales is 27.149 ppm.
The current nitrogen dioxide (NO2) levels at Colwyn Bay, Wales is 1.114 ppb.
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