Worst air pollution Middlebury, today and tomorrow
Today (9 August): Air quality in Middlebury is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 51.3/100).
Tomorrow (10 August 2026): Air quality in Middlebury is fair. All pollutants stay as today. Pollution peaks around 10:00 PM (NO2: 44.8/100). 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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Air quality in Middlebury is driven mostly by clean Champlain Valley air — wood-smoke haze can settle briefly on still winter nights. Day-to-day conditions in Middlebury can still vary with local weather, wind direction, and time of year. Local topography and prevailing winds both play a role in how quickly conditions change.
Today - 9 August | Pollution peaks at 00:00
AQI:
Medium
51.3/100
PM2.5 (fine particles):
Good
17.6/100
PM10 (coarse particles):
Good
10.2/100
NO2 (nitrogen dioxide):
Medium
51.3/100
O3 (ozone):
Fair
38.2/100
SO2 (sulfur dioxide):
Good
5.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
12.9/100
PM1 (ultrafine particles):
Good
14.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 22:00
AQI:
Medium
44.8/100
PM2.5 (fine particles):
Good
17.2/100
PM10 (coarse particles):
Good
9.6/100
NO2 (nitrogen dioxide):
Medium
44.8/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
11.0/100
PM1 (ultrafine particles):
Good
13.3/100
Pollen forecast in Middlebury
View pollen forecastFrequently Asked Questions
Is air quality bad in Middlebury right now?
On 9 August 2026, overall air quality in Middlebury is fair. O3 is the main pollutant at 38.2/100. Pollution peaks around 12:00 AM (NO2: 51.3/100).
Will air quality be worse tomorrow in Middlebury?
On 10 August 2026, air quality conditions in Middlebury will be similar to today, with O3 forecast at fair at 33.1/100. Pollution peaks around 10:00 PM (NO2: 44.8/100).
When is air pollution at its worst in Middlebury?
Air quality across Middlebury rises and falls with the seasons — frequent frontal systems in spring and fall usually keep the air cleanest then, whereas summer heat and regional haze drifting up from the Midwest and South drive ozone spikes. Winter cold fronts tend to clear the air quickly, so extended pollution episodes are relatively uncommon.
Are air quality levels in Middlebury 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: 9 August 2026 at 20:27 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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