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Current air quality index in Cardiff, Wales today

Stay updated with real-time air quality in Cardiff, 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)

40

Good

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Cardiff, Wales

Last updated: ... (Local time)

Major air pollutants in Cardiff, Wales

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

3.89 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

17.00 μg/m³

0

55

155

255

425

605+

Ozone (O3)

43.37 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.56 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

4.24 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.10 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

High

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Cardiff, Wales

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Real-time air quality map: Monitor AQI near Cardiff, Wales




How accurate is Wales, UK air quality data?

The air quality data for Wales, UK is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.


Frequently asked questions

How frequently does the air quality data for Cardiff, Wales get updated?

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Air quality updates for Cardiff, Wales are available every hour.


What time in the past 24 hours saw the poorest air quality in Cardiff, Wales?

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Cardiff, Wales experienced its worst air quality at 11:00:00, 2025-06-12.


When was air quality in Cardiff, Wales the best over the past 24 hours?

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The best air quality in Cardiff, Wales was observed at 04:00:00 on 2025-06-12.


What is the air quality in Cardiff, Wales right now?

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The air quality in Cardiff, Wales right now is Good, with an AQI of 40.


What pollutant is most frequently found in Cardiff, Wales?

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In Cardiff, Wales, O3 is the most frequently found pollutant.


What can I do if the air quality in Cardiff, Wales is poor?

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When air quality in Cardiff, Wales is compromised, staying indoors and wearing a mask can reduce health risks.


What is the PM2.5 concentration in Cardiff, Wales right now?

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Cardiff, Wales currently has a PM2.5 concentration of 3.89 μg/m3.


What is the current level of PM10 in Cardiff, Wales?

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Cardiff, Wales currently has a PM10 concentration of 16.997 μg/m3.


What is the current level of carbon monoxide (CO) in Cardiff, Wales?

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The current carbon monoxide (CO) level in Cardiff, Wales is 0.097 ppm.


What is the current level of sulfur dioxide (SO2) in Cardiff, Wales?

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The current sulfur dioxide (SO2) concentration in Cardiff, Wales is 0.564 ppb.


What is the current level of ozone (O3) in Cardiff, Wales?

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Cardiff, Wales currently has an ozone (O3) concentration of 43.372 ppm.


What is the current level of nitrogen dioxide (NO2) in Cardiff, Wales?

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The current level of nitrogen dioxide (NO2) in Cardiff, Wales is 4.235 ppb.


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