Stay updated with real-time air quality in Cornwall, UK 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)
31
Good
Cornwall, UK
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.73 μg/m³
0
55
155
255
425
605+
32.59 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
1.16 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Cornwall, UK
Cornwall, UK
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| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 16
Good
3.45μg/m³
PM2.5
6.76μg/m³
PM10
12.86ppb
O3
0.45ppb
SO2
4.75ppb
NO2
0.38ppm
CO
AQI 22
Good
3.72μg/m³
PM2.5
6.81μg/m³
PM10
12.58ppb
O3
0.45ppb
SO2
4.36ppb
NO2
0.38ppm
CO
AQI 22
Good
3.87μg/m³
PM2.5
7.92μg/m³
PM10
13.24ppb
O3
0.47ppb
SO2
4.64ppb
NO2
0.38ppm
CO
AQI 27
Good
5.27μg/m³
PM2.5
14.48μg/m³
PM10
9.28ppb
O3
0.53ppb
SO2
6.77ppb
NO2
0.38ppm
CO
AQI 22
Good
3.89μg/m³
PM2.5
8.16μg/m³
PM10
14.64ppb
O3
0.47ppb
SO2
4.99ppb
NO2
0.38ppm
CO
AQI 27
Good
4.88μg/m³
PM2.5
11.59μg/m³
PM10
6.99ppb
O3
0.48ppb
SO2
6.98ppb
NO2
0.38ppm
CO
Air quality and pollutant data for Cornwall, UK are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Cornwall, UK is updated every hour for accuracy.
In the past 24 hours, the air quality in Cornwall, UK was at its worst at 04:00:00 on 2026-10-07.
In the last 24 hours, the best air quality in Cornwall, UK was observed at 01:00:00 on 2026-10-06.
As of now, the AQI in Cornwall, UK is 28, indicating Good conditions.
Cornwall, UK air has the highest levels of O3.
Poor air quality in Cornwall, UK means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Cornwall, UK are currently 2.876 μg/m3.
The PM10 concentration in Cornwall, UK is 7.84 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Cornwall, UK is 0.181 ppm.
Currently, Cornwall, UK has a sulfur dioxide (SO2) concentration of 0.166 ppb.
The current ozone (O3) level in Cornwall, UK at the moment is 30.239 ppm.
Nitrogen dioxide (NO2) level in Cornwall, UK at the moment is 1.319 ppb.
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