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)
38
Good
Penzance, Cornwall
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.28 μg/m³
0
55
155
255
425
605+
40.55 ppb
0
55
71
86
201
201+
0.07 ppb
0
36
76
186
605
1005+
0.59 ppb
0
54
101
361
1250
2050+
0.11 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Penzance, Cornwall
Penzance, Cornwall
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AQI 24
Good
4.11μg/m³
PM2.5
7.73μg/m³
PM10
25.69ppb
O3
0.17ppb
SO2
3.43ppb
NO2
0.11ppm
CO
AQI 23
Good
4.39μg/m³
PM2.5
7.68μg/m³
PM10
25.41ppb
O3
0.17ppb
SO2
3.35ppb
NO2
0.11ppm
CO
AQI 27
Good
4.68μg/m³
PM2.5
7.72μg/m³
PM10
24.93ppb
O3
0.18ppb
SO2
3.48ppb
NO2
0.11ppm
CO
AQI 23
Good
4.07μg/m³
PM2.5
7.61μg/m³
PM10
24.94ppb
O3
0.20ppb
SO2
4.02ppb
NO2
0.11ppm
CO
AQI 23
Good
3.89μg/m³
PM2.5
7.58μg/m³
PM10
25.36ppb
O3
0.21ppb
SO2
4.11ppb
NO2
0.12ppm
CO
AQI 22
Good
3.96μg/m³
PM2.5
7.76μg/m³
PM10
23.80ppb
O3
0.20ppb
SO2
4.21ppb
NO2
0.11ppm
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 10:00:00 on 2025-11-06.
In the last 24 hrs, the best air quality in Penzance, Cornwall was observed at 03:00:00 on 2025-11-07.
The current air quality in Penzance, Cornwall is 27, categorized as Good based on real-time data.
The most common pollutant in Penzance, Cornwall is O3.
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 3.767 μg/m3.
The current PM10 concentration at Penzance, Cornwall is 8.502 μg/m3.
The current carbon monoxide (CO) concentration at Penzance, Cornwall is 0.11 ppm.
The current sulfur dioxide (SO2) concentration at Penzance, Cornwall is 0.161 ppb.
The current ozone (O3) concentration at Penzance, Cornwall is 28.857 ppm.
The current nitrogen dioxide (NO2) concentration at Penzance, Cornwall is 2.88 ppb.
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