Today | Weather | Wednesday, September 24, 2025

Weather in Waterbury, Connecticut

05:50 PM
Now
Cloudy Weather
70° F
Feels Like 70°
Precipitation 49 %
Wind 7 mph
UV Index (0 - 11+) 2
Humidity 92 %
Today
Rainy Weather
Day 72°
Night 64°
Precipitation 70 %
Wind 8
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Waterbury Weather Forecast Updated

34 minutes ago
Last updated on

Air quality in Waterbury

NOW
52 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.48 µg/m³
PM10 10.62 µg/m³
O₃ 50.45 ppb
NO₂ 5.80 ppb
SO₂ 1.04 ppb
CO 229.21 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.