Worst air pollution Acadia Carriage Roads - Bar Harbor, today and tomorrow
Today (9 August): Air quality in Acadia Carriage Roads is fair. NO2 is fair; AQI 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 Acadia Carriage Roads is fair. AQI worsens 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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Acadia's Carriage Roads air quality benefits from the exceptional Mount Desert Island coastal forest position, with consistent Atlantic and Gulf of Maine sea breezes providing reliable maritime ventilation through the 45-mile historic carriage road network. Vehicle traffic is absent on the carriage roads themselves, while the extraordinary Atlantic coastal island forest provides exceptional natural filtration and the outstanding maritime exposure generally maintains excellent conditions on the carriage road network throughout most of the year.
Today - 9 August | Pollution peaks at 09:00
AQI:
Medium
40.9/100
PM2.5 (fine particles):
Good
13.7/100
PM10 (coarse particles):
Good
9.4/100
NO2 (nitrogen dioxide):
Fair
25.7/100
O3 (ozone):
Medium
40.9/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.2/100
PM1 (ultrafine particles):
Good
9.5/100
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
9.8/100
PM10 (coarse particles):
Good
6.6/100
NO2 (nitrogen dioxide):
Fair
20.2/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.3/100
PM1 (ultrafine particles):
Good
6.9/100
Other Landmarks in Bar Harbor
Frequently Asked Questions
Is air quality bad in Acadia Carriage Roads right now?
On 9 August 2026, overall air quality in Acadia Carriage Roads is fair. NO2 is the main pollutant at 25.7/100. Pollution peaks around 9:00 AM (O3: 40.9/100).
Will air quality be worse tomorrow in Acadia Carriage Roads?
On 10 August 2026, air quality conditions in Acadia Carriage Roads will be similar to 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 Acadia Carriage Roads?
Air quality around Acadia Carriage Roads changes with the seasons. 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. Winter cold fronts tend to clear the air quickly, so extended pollution episodes are relatively uncommon.
Are air quality levels in Acadia Carriage Roads 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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