Today | Weather | Wednesday, December 24, 2025

Weather in Waterbury, Connecticut

11:22 AM
Now
Rainy Weather
43° F
Feels Like 28°
Precipitation 54 %
Wind 18 mph
UV Index (0 - 11+) 1
Humidity 52 %
Today
Partly Sunny with Showers
Day 43°
Night 25°
Precipitation 55 %
Wind 15 mph
UV Index (0 - 11+) 2

Waterbury Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 24, 2024)
Snowy Weather

Day

34°

Night

19°

Wind

6 mph

UV Index

2

Precipitation

80 %

Air Quality in Waterbury

NOW
27 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.16 µg/m³
PM10 2.32 µg/m³
O3 0.029 ppm
NO2 4.3 ppb
SO2 0.6 ppb
CO 0.18 ppm
NH3 0.54 µg/m³
NO 1.99 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 considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.51.16 µg/m³
PM102.32 µg/m³
O356.79 µg/m³
NO28.02 µg/m³
SO21.55 µg/m³
CO201.26 µg/m³
NH30.54 µg/m³
NO1.99 µg/m³