Today | Weather | Friday, October 9, 2026

Weather in Stamford, Connecticut

03:34 AM
Now
Night
54° F
Feels Like 50°
Precipitation 0 %
Wind 6 mph
Humidity 77 %
Today
Cloudy Weather
Day 72°
Night 50°
Precipitation 1 %
Wind 10 mph
UV Index (0 - 11+) 4

Stamford Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 9, 2025)
Night

Day

59°

Night

41°

Wind

6 mph

Precipitation

0 %

Air Quality in Stamford

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.81 µg/m³
PM10 6.81 µg/m³
O3 0.024 ppm
NO2 7.5 ppb
SO2 0.9 ppb
CO 0.17 ppm
NH3 1.07 µg/m³
NO 0 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)
PM2.5 – 4.81 µg/m³
PM10 – 6.81 µg/m³
O3 – 48.09 µg/m³
NO2 – 14.09 µg/m³
SO2 – 2.26 µg/m³
CO – 199.36 µg/m³
NH3 – 1.07 µg/m³
NO – 0 µg/m³