Worst air pollution Chester-le-Street, today and tomorrow
Today (16 July): Air quality in Chester-le-Street is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (O3: 28.9/100).
Tomorrow (17 July 2026): Air quality in Chester-le-Street is fair. All pollutants stay as today. Pollution peaks around 12:00 AM (O3: 29.0/100). 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.
Chester-le-Street's position in County Durham means air quality is mostly determined by local road traffic and the compact scale of the centre. Prevailing westerlies tend to disperse pollutants reasonably well, keeping readings close to typical UK small-town levels. The A470 sees the heaviest traffic, and that shows up clearly in local roadside monitoring.
Today - 16 July | Pollution peaks at 23:00
AQI:
Fair
28.9/100
PM2.5 (fine particles):
Good
17.0/100
PM10 (coarse particles):
Good
6.3/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Fair
28.9/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.7/100
PM1 (ultrafine particles):
Good
13.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 00:00
AQI:
Fair
29.0/100
PM2.5 (fine particles):
Good
17.2/100
PM10 (coarse particles):
Good
6.5/100
NO2 (nitrogen dioxide):
Good
1.2/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
13.1/100
Pollen forecast in Chester-le-Street
View pollen forecastFrequently Asked Questions
Is air quality bad in Chester-le-Street right now?
On 16 July 2026, overall air quality in Chester-le-Street is fair. AQI is the main air quality indicator at 28.9/100. Pollution peaks around 11:00 PM (O3: 28.9/100).
Will air quality be worse tomorrow in Chester-le-Street?
On 17 July 2026, air quality conditions in Chester-le-Street will be similar to today, with AQI forecast at fair at 29.0/100. Pollution peaks around 12:00 AM (O3: 29.0/100).
When is air pollution at its worst in Chester-le-Street?
Most of spring and autumn stays fairly steady, right in the middle of those two extremes. Seasons make a real difference to air quality in Chester-le-Street, more than most people realise. Come winter, NO₂ and PM2.5 usually creep up, as heating and calmer air let A470 traffic emissions linger rather than disperse. Come summer, it's ozone rather than particulates that's the bigger concern, especially on still, sunny days.
Are air quality levels in Chester-le-Street 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