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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.27 μg/m³
0
55
155
255
425
605+
32.56 ppb
0
55
71
86
201
201+
0.10 ppb
0
36
76
186
605
1005+
0.84 ppb
0
54
101
361
1250
2050+
0.08 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
St Austell, Cornwall
St Austell, Cornwall
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AQI 30
Good
4.91μg/m³
PM2.5
11.68μg/m³
PM10
31.63ppb
O3
0.16ppb
SO2
1.15ppb
NO2
0.10ppm
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
AQI 31
Good
5.16μg/m³
PM2.5
11.46μg/m³
PM10
34.45ppb
O3
0.10ppb
SO2
0.53ppb
NO2
0.08ppm
CO
AQI 25
Good
3.68μg/m³
PM2.5
12.15μg/m³
PM10
27.38ppb
O3
0.48ppb
SO2
3.31ppb
NO2
0.17ppm
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
5.49μg/m³
PM2.5
11.00μg/m³
PM10
34.34ppb
O3
0.11ppb
SO2
0.63ppb
NO2
0.08ppm
CO
The air quality data for Cornwall, UK is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for St Austell, Cornwall are available every hour.
St Austell, Cornwall experienced its worst air quality at 07:00:00, 2026-06-28.
The best air quality in St Austell, Cornwall was observed at 06:00:00 on 2026-06-29.
The air quality in St Austell, Cornwall right now is Good, with an AQI of 31.
In St Austell, Cornwall, O3 is the most frequently found pollutant.
When air quality in St Austell, Cornwall is compromised, staying indoors and wearing a mask can reduce health risks.
St Austell, Cornwall currently has a PM2.5 concentration of 5.341 μg/m3.
St Austell, Cornwall currently has a PM10 concentration of 10.274 μg/m3.
The current carbon monoxide (CO) level in St Austell, Cornwall is 0.083 ppm.
The current sulfur dioxide (SO2) concentration in St Austell, Cornwall is 0.096 ppb.
St Austell, Cornwall currently has an ozone (O3) concentration of 32.561 ppm.
The current level of nitrogen dioxide (NO2) in St Austell, Cornwall is 0.844 ppb.
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