Worst air pollution New Rochelle, today and tomorrow
Today (16 July): Air quality in New Rochelle is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 37.6/100).
Tomorrow (17 July 2026): Air quality in New Rochelle is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 40.4/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
New Rochelle's air quality reflects the Lower Hudson Sound coastal position in Westchester County, with vehicle emissions from I-95 and the New Haven Line commuter rail corridor and the surrounding dense urban residential character contributing local sources. Long Island Sound maritime breezes provide ventilation from the east, while the broader New York metropolitan area's regional ozone and PM2.5 on prevailing southwesterly winds consistently elevates background pollution above the coastal baseline.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
9.6/100
PM10 (coarse particles):
Good
9.6/100
NO2 (nitrogen dioxide):
Good
2.4/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
5.3/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Medium
40.4/100
PM2.5 (fine particles):
Good
6.5/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
4.2/100
O3 (ozone):
Medium
40.4/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Good
4.1/100
Pollen forecast in New Rochelle
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in New Rochelle
Sports venues in New Rochelle
Frequently Asked Questions
Is air quality bad in New Rochelle right now?
On 16 July 2026, overall air quality in New Rochelle is fair. AQI is the main air quality indicator at 37.6/100. Pollution peaks around 12:00 PM (O3: 37.6/100).
Will air quality be worse tomorrow in New Rochelle?
On 17 July 2026, air quality conditions in New Rochelle will be better than today, with AQI forecast at medium at 40.4/100. Pollution peaks around 12:00 PM (O3: 40.4/100).
When is air pollution at its worst in New Rochelle?
Like most US cities, New Rochelle sees air quality shift from season to season. In short, the cleanest conditions typically arrive with the more unsettled weather of spring and autumn, 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 New Rochelle 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app