Worst air pollution Mount Vernon, New York, today and tomorrow

On 20 September 2026, overall air quality in Mount Vernon, New York is fair. AQI is the main air quality indicator at 32.6/100. Pollution peaks around 1:00 PM (O3: 32.6/100).

On 21 September 2026, air quality conditions in Mount Vernon, New York will be similar to today, with AQI forecast at fair at 33.9/100. Pollution peaks around 1:00 PM (O3: 33.9/100).

Mount Vernon follows a fairly predictable seasonal air quality pattern. In short, the shoulder seasons bring the most consistently clean air of the year, whereas summer heat waves, often worsened by haze drifting in from other regions, bring the year's worst air. Coastal sea breezes can offer some relief from inland summer ozone buildup.

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.