Today | Weather | Monday, September 21, 2026

Weather in New Rochelle, New York

01:57 PM
Now
Cloudy Weather
70° F
Feels Like 70°
Precipitation 0 %
Wind 16 mph
UV Index (0 - 11+) 5
Humidity 56 %
Today
Cloudy Weather
Day 72°
Night 57°
Precipitation 6 %
Wind 15 mph
UV Index (0 - 11+) 5

New Rochelle Weather Forecast Updated

19 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 21, 2025)
Cloudy Weather

Day

68°

Night

55°

Wind

8 mph

UV Index

50

Precipitation

0 %

Air Quality in New Rochelle

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.05 µg/m³
PM10 6.33 µg/m³
O3 0.035 ppm
NO2 4.4 ppb
SO2 1 ppb
CO 0.19 ppm
NH3 0.26 µg/m³
NO 1.15 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)
PM2.54.05 µg/m³
PM106.33 µg/m³
O368.19 µg/m³
NO28.37 µg/m³
SO22.67 µg/m³
CO223.23 µg/m³
NH30.26 µg/m³
NO1.15 µg/m³