Today | Weather | Tuesday, September 1, 2026

Weather in Danbury, Connecticut

11:24 AM
Now
Rainy Weather
73° F
Feels Like 75°
Precipitation 66 %
Wind 5 mph
UV Index (0 - 11+) 1
Humidity 89 %
Today
Stormy Weather
Day 79°
Night 63°
Precipitation 100 %
Wind 6 mph
UV Index (0 - 11+) 2

Danbury Weather Forecast Updated

12 minutes ago
Last updated on

Air Quality in Danbury

NOW
44 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.61 µg/m³
PM10 12.22 µg/m³
O3 0.025 ppm
NO2 7.1 ppb
SO2 1 ppb
CO 0.17 ppm
NH3 0.14 µg/m³
NO 1.13 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)
PM2.510.61 µg/m³
PM1012.22 µg/m³
O349.77 µg/m³
NO213.27 µg/m³
SO22.7 µg/m³
CO196.33 µg/m³
NH30.14 µg/m³
NO1.13 µg/m³