Today | Weather | Thursday, February 5, 2026

Weather in Waterbury, Connecticut

08:37 PM
Now
Cloudy Night
16° F
Feels Like 10°
Precipitation 0 %
Wind 6 mph
Humidity 70 %
Today
Cloudy Night
Day 32°
Night
Precipitation 0 %
Wind 6 mph

Waterbury Weather Forecast Updated

26 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Cloudy Weather

Day

28°

Night

18°

Wind

8 mph

UV Index

2

Precipitation

0 %

Air Quality in Waterbury

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

Pollutant Concentrations:

PM2.5 25.75 µg/m³
PM10 34.92 µg/m³
O3 0.014 ppm
NO2 29.2 ppb
SO2 3.5 ppb
CO 0.47 ppm
NH3 5.09 µg/m³
NO 21.75 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)
PM2.525.75 µg/m³
PM1034.92 µg/m³
O328.28 µg/m³
NO254.89 µg/m³
SO29.3 µg/m³
CO533.44 µg/m³
NH35.09 µg/m³
NO21.75 µg/m³