Today | Weather | Sunday, April 12, 2026

Weather in Danbury, Connecticut

08:43 AM
Now
Cloudy Weather
34° F
Feels Like 37°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 2
Humidity 76 %
Today
Cloudy Weather
Day 59°
Night 46°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 7

Danbury Weather Forecast Updated

18 minutes ago
Last updated on

Air Quality in Danbury

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.8 µg/m³
PM10 6.58 µg/m³
O3 0.038 ppm
NO2 9.5 ppb
SO2 1.5 ppb
CO 0.18 ppm
NH3 1.13 µg/m³
NO 2.66 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)
PM2.52.8 µg/m³
PM106.58 µg/m³
O374.87 µg/m³
NO217.93 µg/m³
SO23.86 µg/m³
CO211.16 µg/m³
NH31.13 µg/m³
NO2.66 µg/m³