Today | Weather | Thursday, February 5, 2026

Weather in Danbury, Connecticut

08:33 PM
Now
Cloudy Night
12° F
Feels Like 12°
Precipitation 0 %
Wind 4 mph
Humidity 77 %
Today
Cloudy Night
Day 63°
Night
Precipitation 0 %
Wind 2 mph

Danbury Weather Forecast Updated

43 minutes ago
Last updated on

Air Quality in Danbury

NOW
102 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 36.24 µg/m³
PM10 44.68 µg/m³
O3 0.007 ppm
NO2 40.8 ppb
SO2 2.3 ppb
CO 0.55 ppm
NH3 4.43 µg/m³
NO 12.59 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.536.24 µg/m³
PM1044.68 µg/m³
O314.21 µg/m³
NO276.69 µg/m³
SO26.12 µg/m³
CO629.74 µg/m³
NH34.43 µg/m³
NO12.59 µg/m³