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)
31
Good
Penzance, Cornwall
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.34 μg/m³
0
55
155
255
425
605+
32.96 ppb
0
55
71
86
201
201+
0.24 ppb
0
36
76
186
605
1005+
1.78 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Penzance, Cornwall
Penzance, Cornwall
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AQI 27
Good
3.78μg/m³
PM2.5
6.92μg/m³
PM10
28.99ppb
O3
0.37ppb
SO2
2.78ppb
NO2
0.16ppm
CO
AQI 27
Good
3.85μg/m³
PM2.5
7.10μg/m³
PM10
28.60ppb
O3
0.39ppb
SO2
2.69ppb
NO2
0.16ppm
CO
AQI 27
Good
3.73μg/m³
PM2.5
7.20μg/m³
PM10
28.64ppb
O3
0.38ppb
SO2
2.70ppb
NO2
0.16ppm
CO
AQI 26
Good
3.87μg/m³
PM2.5
7.24μg/m³
PM10
28.37ppb
O3
0.43ppb
SO2
3.21ppb
NO2
0.16ppm
CO
AQI 27
Good
3.59μg/m³
PM2.5
7.36μg/m³
PM10
28.95ppb
O3
0.42ppb
SO2
3.43ppb
NO2
0.16ppm
CO
AQI 25
Good
4.29μg/m³
PM2.5
7.07μg/m³
PM10
26.88ppb
O3
0.41ppb
SO2
2.73ppb
NO2
0.16ppm
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 2026-11-12.
In the last 24 hrs, the best air quality in Penzance, Cornwall was observed at 11:00:00 on 2026-11-12.
The current air quality in Penzance, Cornwall is 31, 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 2.523 μg/m3.
The current PM10 concentration at Penzance, Cornwall is 6.341 μg/m3.
The current carbon monoxide (CO) concentration at Penzance, Cornwall is 0.146 ppm.
The current sulfur dioxide (SO2) concentration at Penzance, Cornwall is 0.24 ppb.
The current ozone (O3) concentration at Penzance, Cornwall is 32.957 ppm.
The current nitrogen dioxide (NO2) concentration at Penzance, Cornwall is 1.778 ppb.
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