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Today | Weather | Sunday, December 14, 2025
Active Weather Warnings

Weather in New Haven, Connecticut

08:05 AM
Now
Snowy Weather
30° F
Feels Like 25°
Precipitation 69 %
Wind 6 mph
UV Index (0 - 11+) 0
Humidity 87 %
Today
Snowy Weather
Day 32°
Night 14°
Precipitation 90 %
Wind 12 mph
UV Index (0 - 11+) 1

New Haven Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Night

Day

34°

Night

23°

Wind

4 mph

Precipitation

0 %

Air Quality in New Haven

NOW
21 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.09 µg/m³
PM10 2.77 µg/m³
O3 0.023 ppm
NO2 8.5 ppb
SO2 0.6 ppb
CO 0.19 ppm
NH3 0.25 µg/m³
NO 0.01 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)
PM2.5 – 2.09 µg/m³
PM10 – 2.77 µg/m³
O3 – 44.61 µg/m³
NO2 – 15.93 µg/m³
SO2 – 1.55 µg/m³
CO – 216.11 µg/m³
NH3 – 0.25 µg/m³
NO – 0.01 µg/m³
View Hourly Air Quality Forecast

Weather Alerts and Warnings for New Haven

Moderate Expected Likely

Winter Weather Advisory

Winter Weather Advisory issued December 14 at 1:30AM EST until December 14 at 1:00PM EST by NWS Upton NY
Dec 14, 1:30 AM → Dec 14, 1:00 PM
WHAT: Snow. Total snow accumulations between 2 and 4 inches
expected, locally 5 inches possible.

WHERE: Portions of southern Connecticut, northeast New Jersey,
and southeast New York.

WHEN: Until 1 PM EST this afternoon.

IMPACTS: Plan on hazardous road conditions with snow covered
roads this morning.

ADDITIONAL DETAILS: Snow ends mid to late morning today.
+ Read More
Slow down and use caution while traveling. Check local Department of Transportation information services for the latest road conditions.
Updated: Dec 14, 6:50 AM Source: NWS Alert