Worst air pollution Monticello, New York, today and tomorrow
Today (20 September): Air quality in Monticello, New York is moderate. AQI and NO2 are moderate; O3 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (NO2: 44.8/100).
Tomorrow (21 September 2026): Air quality in Monticello, New York is moderate. All pollutants stay as today. Pollution peaks around 5:00 PM (NO2: 43.2/100). 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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In Monticello, clean Catskills mountain air is the main influence on air quality, and air quality is generally excellent outside of pollen peaks. Monticello doesn't see much year-to-year variation in this basic pattern, though individual weeks can differ. None of this replaces checking the current forecast before heading outdoors in Monticello.
Today - 20 September | Pollution peaks at 17:00
AQI:
Moderate
44.8/100
PM2.5 (fine particles):
Good
9.9/100
PM10 (coarse particles):
Good
9.7/100
NO2 (nitrogen dioxide):
Moderate
44.8/100
O3 (ozone):
Fair
33.4/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
6.3/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 17:00
AQI:
Moderate
43.2/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
10.3/100
NO2 (nitrogen dioxide):
Moderate
43.2/100
O3 (ozone):
Fair
37.0/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
8.6/100
Pollen forecast in Monticello, New York
View pollen forecastFrequently Asked Questions
Is air quality bad in Monticello, New York right now?
On 20 September 2026, overall air quality in Monticello, New York is moderate. AQI is the main air quality indicator at 44.8/100. Pollution peaks around 5:00 PM (NO2: 44.8/100).
Will air quality be worse tomorrow in Monticello, New York?
On 21 September 2026, air quality conditions in Monticello, New York will be similar to today, with AQI forecast at moderate at 43.2/100. Pollution peaks around 5:00 PM (NO2: 43.2/100).
When is air pollution at its worst in Monticello, New York?
Like most US cities, Monticello sees air quality shift from season to season: the shoulder seasons bring the most consistently clean air of the year, but summer heat and regional haze drifting up from the Midwest and South drive ozone spikes. Coastal sea breezes can offer some relief from inland summer ozone buildup.
Are air quality levels in Monticello, New York 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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