Today | Weather | Thursday, September 4, 2025

Weather in Waterbury, Connecticut

08:40 AM

Now

63° F

Feels Like 66°

Precipitation 7 %

Wind 5 mph

UV Index (0 - 11+) 11

Humidity 90 %

Today

Day 79°

Night 63°

Precipitation 25 %

Wind 10 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:

Mostly bright and clear; breezy this afternoon.

Waterbury Weather Forecast Updated

21 minutes ago

Last updated on September 04, 2025 8:18 AM

Air quality in Waterbury

NOW

37 AQI

Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 9.72 µg/m³

PM10 11.99 µg/m³

O₃ 31.97 ppb

NO₂ 9.10 ppb

SO₂ 1.79 ppb

CO 198.37 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