Worst air pollution Grand Forks, today and tomorrow

On 12 August 2026, overall air quality in Grand Forks is fair. PM1 is the main pollutant at 32.7/100. Pollution peaks around 10:00 PM (NO2: 59.0/100).

On 13 August 2026, air quality conditions in Grand Forks will be worse than today, with AQI forecast at poor at 73.6/100. Pollution peaks around 11:00 PM (NO2: 73.6/100).

Grand Forks's air quality follows a seasonal rhythm tied to its valley setting where the Kettle and Granby rivers meet. For most of the year the air stays clean and lake-fresh, but summer tourist traffic and, in some years, drifting wildfire smoke can briefly worsen conditions. Weekday air quality is often noticeably better than on busy summer weekends when visitor numbers peak.

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.