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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.53 μg/m³
0
55
155
255
425
605+
33.53 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
2.75 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Penzance, Cornwall
Penzance, Cornwall
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AQI 33
Good
4.88μg/m³
PM2.5
13.03μg/m³
PM10
35.88ppb
O3
0.21ppb
SO2
2.71ppb
NO2
0.12ppm
CO
AQI 31
Good
5.30μg/m³
PM2.5
14.05μg/m³
PM10
33.87ppb
O3
0.23ppb
SO2
3.09ppb
NO2
0.12ppm
CO
AQI 33
Good
5.53μg/m³
PM2.5
14.29μg/m³
PM10
33.10ppb
O3
0.24ppb
SO2
3.26ppb
NO2
0.12ppm
CO
AQI 33
Good
4.94μg/m³
PM2.5
13.01μg/m³
PM10
35.58ppb
O3
0.22ppb
SO2
2.78ppb
NO2
0.12ppm
CO
AQI 33
Good
4.78μg/m³
PM2.5
12.56μg/m³
PM10
36.22ppb
O3
0.21ppb
SO2
2.59ppb
NO2
0.12ppm
CO
AQI 31
Good
5.24μg/m³
PM2.5
13.75μg/m³
PM10
33.38ppb
O3
0.25ppb
SO2
2.84ppb
NO2
0.12ppm
CO
Air quality data and pollutant measurements for Cornwall, UK adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Penzance, Cornwall is updated every hour.
The worst air quality in Penzance, Cornwall in the last 24 hours was observed at 02:00:00 on 2025-12-28.
In the last 24 hrs, the best air quality in Penzance, Cornwall was observed at 10:00:00 on 2025-12-28.
The current air quality in Penzance, Cornwall is 33, categorized as Good based on real-time data.
The most common pollutant in Penzance, Cornwall is PM2.5.
If the air quality in Penzance, Cornwall is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Penzance, Cornwall is 5.688 μg/m3.
The current PM10 concentration at Penzance, Cornwall is 13.533 μg/m3.
The current carbon monoxide (CO) concentration at Penzance, Cornwall is 0.121 ppm.
The current sulfur dioxide (SO2) concentration at Penzance, Cornwall is 0.224 ppb.
The current ozone (O3) concentration at Penzance, Cornwall is 33.534 ppm.
The current nitrogen dioxide (NO2) concentration at Penzance, Cornwall is 2.751 ppb.
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