Today | Weather | Monday, December 15, 2025

Weather in Stamford, Connecticut

04:41 PM
Now
Cloudy Night
28° F
Feels Like 14°
Precipitation 7 %
Wind 14 mph
Humidity 62 %
Today
Cloudy Weather
Day 30°
Night 21°
Precipitation 25 %
Wind 14 mph
UV Index (0 - 11+) 2

Stamford Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 15, 2024)
Rainy Weather

Day

37°

Night

37°

Wind

6 mph

Precipitation

90 %

Air Quality in Stamford

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3 µg/m³
PM10 4.65 µg/m³
O3 0.029 ppm
NO2 7.9 ppb
SO2 1.4 ppb
CO 0.16 ppm
NH3 1.05 µg/m³
NO 0.03 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)
PM2.53 µg/m³
PM104.65 µg/m³
O356.09 µg/m³
NO214.92 µg/m³
SO23.78 µg/m³
CO184.9 µg/m³
NH31.05 µg/m³
NO0.03 µg/m³