Today | Weather | Tuesday, May 19, 2026
Active Weather Warnings

Weather in New Rochelle, New York

07:29 AM
Now
Cloudy Weather
72° F
Feels Like 73°
Precipitation 5 %
Wind 6 mph
UV Index (0 - 11+) 1
Humidity 72 %
Today
Cloudy Weather
Day 93°
Night 72°
Precipitation 25 %
Wind 10 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

New Rochelle Weather Forecast Updated

Last updated on

Air Quality in New Rochelle

NOW
32 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 7.74 µg/m³
PM10 11.58 µg/m³
O3 0.033 ppm
NO2 2 ppb
SO2 0.6 ppb
CO 0.12 ppm
NH3 1.11 µg/m³
NO 0.1 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.57.74 µg/m³
PM1011.58 µg/m³
O364.67 µg/m³
NO23.81 µg/m³
SO21.59 µg/m³
CO141.19 µg/m³
NH31.11 µg/m³
NO0.1 µg/m³

Weather Alerts and Warnings for New Rochelle

Air Quality Alert

Air Quality Alert issued May 18 at 11:35PM EDT by NWS Upton NY
May 18, 11:35 PM May 19, 11:00 PM
The New York State Department of Environmental Conservation has
issued an Air Quality Health Advisory for the following counties:

New York, Bronx, Kings, Queens, Richmond, Nassau, Suffolk,
Westchester, Rockland.

from 11 AM to 11 PM EDT Tuesday.

Air quality levels in outdoor air are predicted to be greater than
an Air Quality Index value of 100 for the pollutant of Ground Level
Ozone. The Air Quality Index, or AQI, was created as an easy way to
correlate levels of different pollutants to one scale. The higher
the AQI value, the greater the health concern.

When pollution levels are elevated, the New York State Department of
Health recommends that individuals consider limiting strenuous
outdoor physical activity to reduce the risk of adverse health
effects. People who may be especially sensitive to the effects of
elevated levels of pollutants include the very young, and those with
preexisting respiratory problems such as asthma or heart disease.
Those with symptoms should consider consulting their personal
physician.

For additional information, please visit the New York State
Department of Environmental Conservation website at,
https://on.ny.gov/nyaqi, or call the Air Quality Hotline at
1 800 5 3 5, 1 3 4 5.
Updated: May 19, 6:23 AM Source: NWS Alert