Today | Weather | Monday, August 18, 2025

Weather in Waterbury, Connecticut

03:00 PM
Now
Cloudy WeatherCloudy weather, overcast skies with clouds.
73° F
Feels Like 79°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 11
Humidity 50 %
Today
Cloudy WeatherCloudy weather, overcast skies with clouds.
Day 73°
Night 52°
Precipitation 2 %
Wind 9 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:

Partly sunny and less muggy.

Waterbury Weather Forecast Updated

7 minutes ago
Last updated on

Weather Forecast History

Last Year's Weather on This Day (August 18, 2024)

Day

70°

Night

64°

Air quality in Waterbury

NOW
46 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.16 µg/m³
PM10 9.24 µg/m³
O₃ 44.97 ppb
NO₂ 2.37 ppb
SO₂ 0.54 ppb
CO 135.50 ppb
PM2.5 – 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