Worst air pollution St Austell, today and tomorrow
Today (16 July): Air quality in St Austell is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 26.9/100).
Tomorrow (17 July 2026): Air quality in St Austell is fair. All pollutants stay as today. Pollution peaks around 9:00 PM (O3: 26.3/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
The M6 generates consistent traffic-related NO₂ and PM2.5, particularly during peak commuting hours. St Austell's position in Cornwall means air quality is mostly determined by local road traffic and the compact scale of the centre. The prevailing Atlantic airflow generally provide reasonable ventilation, keeping levels close to typical UK urban averages for a town this size.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
26.9/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Good
1.8/100
O3 (ozone):
Fair
26.9/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.1/100
PM1 (ultrafine particles):
Good
7.6/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 21:00
AQI:
Fair
26.3/100
PM2.5 (fine particles):
Good
13.2/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Good
1.6/100
O3 (ozone):
Fair
26.3/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
10.0/100
Pollen forecast in St Austell
View pollen forecastFrequently Asked Questions
Is air quality bad in St Austell right now?
On 16 July 2026, overall air quality in St Austell is fair. AQI is the main air quality indicator at 26.9/100. Pollution peaks around 5:00 PM (O3: 26.9/100).
Will air quality be worse tomorrow in St Austell?
On 17 July 2026, air quality conditions in St Austell will be similar to today, with AQI forecast at fair at 26.3/100. Pollution peaks around 9:00 PM (O3: 26.3/100).
When is air pollution at its worst in St Austell?
Air quality in St Austell isn't the same all year round — it really shifts with the seasons. Summer brings a different issue — stronger sunlight can push up ozone levels on hot, sunny days, even though traffic pollution itself often disperses more easily. Winter mornings can be the trickiest, with cold, still conditions trapping M6 traffic fumes and smoke from home fires close to the ground.
Are air quality levels in St Austell based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Want to see air quality forecasts for other cities in United Kingdom?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app