Hourly Weather | Today Tuesday, May 19, 2026
Active Weather Warnings
New Rochelle, New York
8 AM
Sunny Weather
72°
Feels Like 73°
0
Humidity: 73%
UV Index: 2
Wind: 7 mph
9 AM
Sunny Weather
77°
Feels Like 81°
0
Humidity: 64%
UV Index: 3
Wind: 8 mph
10 AM
Sunny Weather
81°
Feels Like 84°
0
Humidity: 56%
UV Index: 5
Wind: 8 mph
11 AM
Sunny Weather
84°
Feels Like 90°
0
Humidity: 49%
UV Index: 7
Wind: 8 mph
12 PM
Sunny Weather
88°
Feels Like 93°
0
Humidity: 43%
UV Index: 9
Wind: 9 mph
1 PM
Cloudy Weather
90°
Feels Like 97°
0
Humidity: 38%
UV Index: 10
Wind: 10 mph
2 PM
Cloudy Weather
91°
Feels Like 97°
7
Humidity: 35%
UV Index: 9
Wind: 12 mph
3 PM
Cloudy Weather
93°
Feels Like 97°
7
Humidity: 33%
UV Index: 7
Wind: 13 mph
4 PM
Cloudy Weather
91°
Feels Like 93°
7
Humidity: 34%
UV Index: 5
Wind: 13 mph
5 PM
Cloudy Weather
91°
Feels Like 90°
7
Humidity: 35%
UV Index: 3
Wind: 13 mph
6 PM
Cloudy Weather
90°
Feels Like 88°
7
Humidity: 37%
UV Index: 2
Wind: 12 mph
7 PM
Cloudy Weather
88°
Feels Like 84°
5
Humidity: 41%
UV Index: 1
Wind: 10 mph
8 PM
Cloudy Weather
84°
Feels Like 81°
0
Humidity: 46%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
82°
Feels Like 79°
0
Humidity: 50%
UV Index: 0
Wind: 9 mph
10 PM
Cloudy Night
81°
Feels Like 77°
0
Humidity: 55%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
79°
Feels Like 77°
0
Humidity: 57%
UV Index: 0
Wind: 8 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.45 µg/m³
  • PM10: 11.38 µg/m³
  • O3: 0.032 ppm
  • NO2: 2.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

9 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.36 µg/m³
  • PM10: 11.36 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

10 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.63 µg/m³
  • PM10: 11.65 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

11 AM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.58 µg/m³
  • PM10: 12.53 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

12 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.59 µg/m³
  • PM10: 10.84 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

1 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.28 µg/m³
  • PM10: 10.29 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

2 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.56 µg/m³
  • PM10: 10.5 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.89 µg/m³
  • PM10: 10.95 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
56 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.96 µg/m³
  • PM10: 11.16 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
53 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.99 µg/m³
  • PM10: 11.34 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.84 µg/m³
  • PM10: 11.3 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.56 µg/m³
  • PM10: 11.17 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

8 PM
48 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.2 µg/m³
  • PM10: 10.98 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

9 PM
47 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.89 µg/m³
  • PM10: 10.85 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.88 µg/m³
  • PM10: 11.09 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

11 PM
46 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 11.42 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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