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
3.88 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.15 μg/m³
0
55
155
255
425
605+
33.78 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
5.24 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Cornwall, UK
Cornwall, UK
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| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 49
Good
9.12μg/m³
PM2.5
19.64μg/m³
PM10
18.11ppb
O3
0.69ppb
SO2
9.94ppb
NO2
0.13ppm
CO
AQI 49
Good
8.94μg/m³
PM2.5
19.16μg/m³
PM10
14.75ppb
O3
0.68ppb
SO2
22.11ppb
NO2
0.13ppm
CO
AQI 52
Moderate
10.46μg/m³
PM2.5
21.33μg/m³
PM10
21.93ppb
O3
0.73ppb
SO2
4.63ppb
NO2
0.11ppm
CO
AQI 49
Good
9.35μg/m³
PM2.5
22.44μg/m³
PM10
21.43ppb
O3
0.75ppb
SO2
9.81ppb
NO2
0.09ppm
CO
AQI 52
Moderate
10.39μg/m³
PM2.5
20.90μg/m³
PM10
20.20ppb
O3
0.80ppb
SO2
12.09ppb
NO2
0.10ppm
CO
AQI 52
Moderate
9.60μg/m³
PM2.5
19.58μg/m³
PM10
19.60ppb
O3
0.82ppb
SO2
10.82ppb
NO2
0.10ppm
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 11:00:00 on 2025-11-06.
In the last 24 hours, the best air quality in Cornwall, UK was observed at 05:00:00 on 2025-11-06.
As of now, the AQI in Cornwall, UK is 38, indicating Good conditions.
Cornwall, UK air has the highest levels of PM2.5.
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 6.803 μg/m3.
The PM10 concentration in Cornwall, UK is 12.508 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Cornwall, UK is 0.116 ppm.
Currently, Cornwall, UK has a sulfur dioxide (SO2) concentration of 0.338 ppb.
The current ozone (O3) level in Cornwall, UK at the moment is 24.296 ppm.
Nitrogen dioxide (NO2) level in Cornwall, UK at the moment is 6.73 ppb.
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