Today | Weather | Tuesday, January 13, 2026

Weather in Waterbury, Connecticut

03:31 PM
Now
Cloudy Weather
39° F
Feels Like 28°
Precipitation 0 %
Wind 15 mph
UV Index (0 - 11+) 1
Humidity 60 %
Today
Cloudy Weather
Day 45°
Night 36°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 2

Waterbury Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 13, 2025)
Cloudy Weather

Day

39°

Night

25°

Wind

8 mph

UV Index

1

Precipitation

3 %

Air Quality in Waterbury

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

Pollutant Concentrations:

PM2.5 12.94 µg/m³
PM10 17.39 µg/m³
O3 0.026 ppm
NO2 13.7 ppb
SO2 2.4 ppb
CO 0.23 ppm
NH3 0.83 µg/m³
NO 1.83 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)
PM2.512.94 µg/m³
PM1017.39 µg/m³
O351.35 µg/m³
NO225.7 µg/m³
SO26.22 µg/m³
CO264.14 µg/m³
NH30.83 µg/m³
NO1.83 µg/m³