Today | Weather | Wednesday, September 3, 2025

Weather in New Haven, Connecticut

01:46 AM

Now

59° F

Feels Like 59°

Precipitation 0 %

Wind 4 mph

Humidity 95 %

Today

Day 75°

Night 57°

Precipitation 1 %

Wind 7 mph

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Other:

Pleasant with plenty of sun with a twist.

New Haven Weather Forecast Updated

54 minutes ago

Last updated on September 03, 2025 12:52 AM

Air quality in New Haven

NOW

45 AQI

Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.39 µg/m³

PM10 13.51 µg/m³

O₃ 29.95 ppb

NO₂ 9.70 ppb

SO₂ 0.53 ppb

CO 196.26 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors

View Hourly Air Quality Forecast