Today | Weather | Tuesday, November 4, 2025

Weather in Waterbury, Connecticut

05:17 AM

Now

39° F

Feels Like 28°

Precipitation 20 %

Wind 16 mph

Humidity 76 %

Today

Day 55°

Night 36°

Precipitation 0 %

Wind 18 mph

UV Index (0 - 11+) 3

Waterbury Weather Forecast Updated

5 minutes ago

Last updated on November 04, 2025 5:11 AM

Weather Forecast History

Last Year's Weather on This Day (November 4, 2024)

Day

54°

Night

46°

Wind

4 mph

Precipitation

Air Quality in Waterbury

NOW

35 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 1.14 µg/m³

PM₁₀ 1.96 µg/m³

O₃ 0.038 ppm

NO₂ 3 ppb

SO₂ 0.7 ppb

CO 0.11 ppm

NH₃ 0.42 µg/m³

NO 0 µg/m³

PM_2.5 – 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)

PM_2.5 – 1.14 µg/m³

PM₁₀ – 1.96 µg/m³

O₃ – 74.94 µg/m³

NO₂ – 5.6 µg/m³

SO₂ – 1.76 µg/m³

CO – 131.18 µg/m³

NH₃ – 0.42 µg/m³

NO – 0 µg/m³

View Hourly Air Quality Forecast