Worst air pollution North Conway, today and tomorrow
Today (20 September): Air quality in North Conway is good. AQI, PM2.5, PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 18.1/100).
Tomorrow (21 September 2026): Air quality in North Conway is good. All pollutants stay as today. Pollution peaks around 3:00 PM (NO2: 18.6/100). Airmine updates local air quality forecasts four times daily.
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North Conway's White Mountains air quality benefits from the exceptional New Hampshire Presidential Range position, with consistent White Mountain westerlies and the Saco River valley's natural ventilation providing reliable conditions through this famous ski and outdoor recreation corridor. Vehicle traffic on NH-16 contributes seasonal tourist sources, while the extraordinary mountain and valley wilderness provides natural filtration and the White Mountain setting generally maintains good to excellent conditions throughout most of the year.
Today - 20 September | Pollution peaks at 12:00
AQI:
Good
18.1/100
PM2.5 (fine particles):
Good
12.5/100
PM10 (coarse particles):
Good
9.8/100
NO2 (nitrogen dioxide):
Good
14.4/100
O3 (ozone):
Good
18.1/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
2.9/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 15:00
AQI:
Good
18.6/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Good
18.6/100
O3 (ozone):
Good
16.3/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.3/100
PM1 (ultrafine particles):
Good
2.7/100
Pollen forecast in North Conway
View pollen forecastFrequently Asked Questions
Is air quality bad in North Conway right now?
On 20 September 2026, overall air quality in North Conway is good. AQI is the main air quality indicator at 18.1/100. Pollution peaks around 12:00 PM (O3: 18.1/100).
Will air quality be worse tomorrow in North Conway?
On 21 September 2026, air quality conditions in North Conway will be similar to today, with AQI forecast at good at 18.6/100. Pollution peaks around 3:00 PM (NO2: 18.6/100).
When is air pollution at its worst in North Conway?
White Mountains experiences the same seasonal air quality swings as the rest of North Conway, as the shoulder seasons bring the most consistently clean air of the year; by contrast, hot, humid summer days bring the highest ozone risk, often worsened by pollution transported in from other regions. Coastal sea breezes can offer some relief from inland summer ozone buildup.
Are air quality levels in North Conway 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: 20 September 2026 at 14:33 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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