Today | Weather | Friday, October 9, 2026

Weather in New Haven, Connecticut

04:20 PM
Now
Cloudy Weather
70° F
Feels Like 70°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 2
Humidity 42 %
Today
Cloudy Weather
Day 70°
Night 46°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 4

New Haven Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 9, 2025)
Night

Day

59°

Night

39°

Wind

6 mph

Precipitation

0 %

Air Quality in New Haven

NOW
73 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.44 µg/m³
PM10 8.75 µg/m³
O3 0.061 ppm
NO2 2 ppb
SO2 1.3 ppb
CO 0.14 ppm
NH3 0.5 µg/m³
NO 0.4 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.5 – 7.44 µg/m³
PM10 – 8.75 µg/m³
O3 – 120.72 µg/m³
NO2 – 3.84 µg/m³
SO2 – 3.34 µg/m³
CO – 162.65 µg/m³
NH3 – 0.5 µg/m³
NO – 0.4 µg/m³