Today | Weather | Tuesday, April 7, 2026

Weather in Waterbury, Connecticut

02:21 PM
Now
Cloudy Weather
48° F
Feels Like 45°
Precipitation 0 %
Wind 20 mph
UV Index (0 - 11+) 6
Humidity 34 %
Today
Partly Sunny with Showers
Day 52°
Night 23°
Precipitation 55 %
Wind 14 mph
UV Index (0 - 11+) 6
Tomorrow Morning Frost 6 AM – 7 AM

Waterbury Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 7, 2025)
Rainy Weather

Day

41°

Night

36°

Wind

7 mph

UV Index

1

Precipitation

97 %

Air Quality in Waterbury

NOW
69 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.47 µg/m³
PM10 3.29 µg/m³
O3 0.060 ppm
NO2 2 ppb
SO2 0.6 ppb
CO 0.14 ppm
NH3 0.51 µg/m³
NO 1 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)
PM2.52.47 µg/m³
PM103.29 µg/m³
O3117.89 µg/m³
NO23.81 µg/m³
SO21.64 µg/m³
CO165.42 µg/m³
NH30.51 µg/m³
NO1 µg/m³