Worst air pollution Dereham, today and tomorrow
Today (16 July): Air quality in Dereham is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 29.1/100).
Tomorrow (17 July 2026): Air quality in Dereham is fair. All pollutants stay as today. Pollution peaks around 1:00 PM (O3: 29.4/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Dereham's position in Norfolk means air quality is mostly determined by local road traffic and the compact scale of the centre. The M6 generates consistent traffic-related NO₂ and PM2.5, particularly during peak commuting hours. Residential heating and light industry add a modest seasonal contribution, though light prevailing breezes keep overall levels moderate.
Today - 16 July | Pollution peaks at 15:00
AQI:
Fair
29.1/100
PM2.5 (fine particles):
Good
13.8/100
PM10 (coarse particles):
Good
4.8/100
NO2 (nitrogen dioxide):
Good
7.9/100
O3 (ozone):
Fair
29.1/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
10.8/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Fair
29.4/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
5.3/100
NO2 (nitrogen dioxide):
Good
7.5/100
O3 (ozone):
Fair
29.4/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.6/100
PM1 (ultrafine particles):
Good
11.7/100
Pollen forecast in Dereham
View pollen forecastFrequently Asked Questions
Is air quality bad in Dereham right now?
On 16 July 2026, overall air quality in Dereham is fair. AQI is the main air quality indicator at 29.1/100. Pollution peaks around 3:00 PM (O3: 29.1/100).
Will air quality be worse tomorrow in Dereham?
On 17 July 2026, air quality conditions in Dereham will be similar to today, with AQI forecast at fair at 29.4/100. Pollution peaks around 1:00 PM (O3: 29.4/100).
When is air pollution at its worst in Dereham?
Ask a local in Dereham and they'll tell you air quality changes noticeably from season to season. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter. Winter tends to be worst, with wood burning, home heating, and still, cold air trapping traffic fumes from the M6 closer to ground level. Spring and autumn usually sit somewhere in between, so it's really the extremes of the year worth watching.
Are air quality levels in Dereham 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.
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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