Today | Weather | Sunday, March 15, 2026

Weather in Stamford, Connecticut

05:12 PM
Now
Cloudy Weather
41° F
Feels Like 30°
Precipitation 0 %
Wind 15 mph
UV Index (0 - 11+) 1
Humidity 59 %
Today
Cloudy Weather
Day 41°
Night 39°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 3

Stamford Weather Forecast Updated

16 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 15, 2025)
Rainy Weather

Day

48°

Night

46°

Wind

7 mph

UV Index

1

Precipitation

49 %

Air Quality in Stamford

NOW
58 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.13 µg/m³
PM10 4.32 µg/m³
O3 0.057 ppm
NO2 0.6 ppb
SO2 0.2 ppb
CO 0.13 ppm
NH3 0.08 µg/m³
NO 0.13 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.52.13 µg/m³
PM104.32 µg/m³
O3111.07 µg/m³
NO21.17 µg/m³
SO20.58 µg/m³
CO150.57 µg/m³
NH30.08 µg/m³
NO0.13 µg/m³