Today | Weather | Sunday, January 4, 2026

Weather in Stamford, Connecticut

08:22 PM
Now
Cloudy Night
30° F
Feels Like 18°
Precipitation 0 %
Wind 15 mph
Humidity 57 %
Today
Cloudy Night
Day 34°
Night 25°
Precipitation 0 %
Wind 10 mph

Stamford Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 4, 2025)
Cloudy Weather

Day

34°

Night

27°

Wind

17 mph

UV Index

2

Precipitation

0 %

Air Quality in Stamford

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

Pollutant Concentrations:

PM2.5 6 µg/m³
PM10 9.19 µg/m³
O3 0.027 ppm
NO2 12 ppb
SO2 1 ppb
CO 0.22 ppm
NH3 1.15 µg/m³
NO 0.01 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)
PM2.56 µg/m³
PM109.19 µg/m³
O353.12 µg/m³
NO222.56 µg/m³
SO22.51 µg/m³
CO250.68 µg/m³
NH31.15 µg/m³
NO0.01 µg/m³