Worst air pollution Montpelier, today and tomorrow
Today (9 August): Air quality in Montpelier is fair. PM2.5 is fair; AQI, NO2, and O3 are medium; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 44.2/100).
Tomorrow (10 August 2026): Air quality in Montpelier is fair. AQI worsens to fair; PM2.5 decreases to good; NO2 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 38.0/100). 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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Montpelier's air quality is shaped largely by cool Green Mountain air; the valley setting can trap morning fog and pollen on still days. That mix of factors is fairly representative of towns in this part of the country. None of this replaces checking the current forecast before heading outdoors in Montpelier.
Today - 9 August | Pollution peaks at 00:00
AQI:
Medium
44.2/100
PM2.5 (fine particles):
Fair
20.4/100
PM10 (coarse particles):
Good
14.1/100
NO2 (nitrogen dioxide):
Medium
44.2/100
O3 (ozone):
Medium
40.9/100
SO2 (sulfur dioxide):
Good
4.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
14.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Fair
38.0/100
PM2.5 (fine particles):
Good
14.7/100
PM10 (coarse particles):
Good
9.8/100
NO2 (nitrogen dioxide):
Fair
38.0/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.3/100
PM1 (ultrafine particles):
Good
10.3/100
Pollen forecast in Montpelier
View pollen forecastFrequently Asked Questions
Is air quality bad in Montpelier right now?
On 9 August 2026, overall air quality in Montpelier is fair. PM2.5 is the main pollutant at 20.4/100. Pollution peaks around 12:00 AM (NO2: 44.2/100).
Will air quality be worse tomorrow in Montpelier?
On 10 August 2026, air quality conditions in Montpelier will be similar to today, with AQI forecast at fair at 38.0/100. Pollution peaks around 11:00 PM (NO2: 38.0/100).
When is air pollution at its worst in Montpelier?
Air quality across Montpelier rises and falls with the seasons. In short, the cleanest conditions typically arrive with the more unsettled weather of spring and autumn, whereas the muggiest days of midsummer, especially when regional haze moves in, are when conditions dip most. Inland valley locations tend to hold onto summer haze longer than areas closer to open water.
Are air quality levels in Montpelier 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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