Worst air pollution Vermont Fall Foliage - Stowe, today and tomorrow
Today (9 August): Air quality in Vermont Fall Foliage is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 40.9/100).
Tomorrow (10 August 2026): Air quality in Vermont Fall Foliage is fair. AQI worsens to fair; NO2 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 AM (O3: 34.0/100). 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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Stowe's Vermont Fall Foliage air quality benefits from the Green Mountain elevated position at 300 to 900 metres, with consistent Atlantic and Green Mountain westerly winds providing reliable ventilation through the extraordinary autumn colour landscape. Vehicle traffic on VT-100 contributes seasonal tourist sources, while the extraordinary maple and birch forest provides exceptional natural filtration and Vermont's clean New England mountain air generally maintains excellent to good conditions throughout most of the fall foliage season.
Today - 9 August | Pollution peaks at 09:00
AQI:
Medium
40.9/100
PM2.5 (fine particles):
Good
18.2/100
PM10 (coarse particles):
Good
12.6/100
NO2 (nitrogen dioxide):
Medium
40.8/100
O3 (ozone):
Medium
40.9/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
12.6/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 11:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
13.1/100
PM10 (coarse particles):
Good
8.7/100
NO2 (nitrogen dioxide):
Fair
32.1/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
2.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.3/100
PM1 (ultrafine particles):
Good
9.2/100
Other Landmarks in Stowe
Frequently Asked Questions
Is air quality bad in Vermont Fall Foliage right now?
On 9 August 2026, overall air quality in Vermont Fall Foliage is medium. AQI is the main air quality indicator at 40.9/100. Pollution peaks around 9:00 AM (O3: 40.9/100).
Will air quality be worse tomorrow in Vermont Fall Foliage?
On 10 August 2026, air quality conditions in Vermont Fall Foliage will be worse than today, with AQI forecast at fair at 34.0/100. Pollution peaks around 11:00 AM (O3: 34.0/100).
When is air pollution at its worst in Vermont Fall Foliage?
Vermont Fall Foliage experiences the same seasonal air quality swings as the rest of Stowe: spring and autumn generally bring the cleanest air, helped by more active weather patterns, but 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.
Are air quality levels in Vermont Fall Foliage 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.
Why doesn’t the forecast always reflect wildfire impacts?
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.
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Data provided by Airmine — Last update: 10 August 2026 at 02:34 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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