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
5.66 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.90 μg/m³
0
55
155
255
425
605+
33.90 ppb
0
55
71
86
201
201+
0.12 ppb
0
36
76
186
605
1005+
0.60 ppb
0
54
101
361
1250
2050+
0.08 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
5.52μg/m³
PM2.5
11.81μg/m³
PM10
34.79ppb
O3
0.10ppb
SO2
0.47ppb
NO2
0.08ppm
CO
AQI 33
Good
5.54μg/m³
PM2.5
11.84μg/m³
PM10
34.63ppb
O3
0.10ppb
SO2
0.50ppb
NO2
0.08ppm
CO
AQI 32
Good
5.49μg/m³
PM2.5
11.65μg/m³
PM10
34.66ppb
O3
0.10ppb
SO2
0.54ppb
NO2
0.08ppm
CO
AQI 31
Good
5.49μg/m³
PM2.5
11.00μg/m³
PM10
34.34ppb
O3
0.11ppb
SO2
0.63ppb
NO2
0.08ppm
CO
AQI 32
Good
5.47μg/m³
PM2.5
10.95μg/m³
PM10
34.57ppb
O3
0.15ppb
SO2
0.76ppb
NO2
0.08ppm
CO
AQI 31
Good
5.36μg/m³
PM2.5
10.68μg/m³
PM10
34.13ppb
O3
0.10ppb
SO2
0.66ppb
NO2
0.08ppm
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 2026-06-29.
In the last 24 hrs, the best air quality in Penzance, Cornwall was observed at 06:00:00 on 2026-06-29.
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 5.66 μg/m3.
The current PM10 concentration at Penzance, Cornwall is 12.903 μg/m3.
The current carbon monoxide (CO) concentration at Penzance, Cornwall is 0.078 ppm.
The current sulfur dioxide (SO2) concentration at Penzance, Cornwall is 0.123 ppb.
The current ozone (O3) concentration at Penzance, Cornwall is 33.899 ppm.
The current nitrogen dioxide (NO2) concentration at Penzance, Cornwall is 0.6 ppb.
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