Worst air pollution Holt Norfolk, today and tomorrow

On 9 August 2026, overall air quality in Holt Norfolk is medium. AQI is the main air quality indicator at 40.5/100. Pollution peaks around 6:00 PM (O3: 40.5/100).

On 10 August 2026, air quality conditions in Holt Norfolk will be worse than today, with AQI forecast at fair at 26.5/100. Pollution peaks around 12:00 AM (O3: 26.5/100).

Holt Norfolk's air quality follows a familiar seasonal pattern most UK towns share. Winter mornings can be the trickiest, with cold, still conditions trapping A47 traffic fumes and smoke from home fires close to the ground. By summer, ozone tends to rise on bright days, while better ventilation generally keeps particulate and NO₂ levels lower than winter. Spring and autumn usually sit somewhere in between, so it's really the extremes of the year worth watching.

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.

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.