Today | Weather | Friday, May 29, 2026

Weather in Stamford, Connecticut

12:16 PM
Now
Cloudy Weather
72° F
Feels Like 77°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 9
Humidity 40 %
Today
Cloudy Weather
Day 77°
Night 52°
Precipitation 2 %
Wind 12 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Stamford Weather Forecast Updated

29 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 29, 2025)
Rainy Weather

Day

64°

Night

61°

Wind

6 mph

UV Index

3

Precipitation

55 %

Air Quality in Stamford

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.09 µg/m³
PM10 3.93 µg/m³
O3 0.038 ppm
NO2 2.6 ppb
SO2 0.7 ppb
CO 0.13 ppm
NH3 0.68 µg/m³
NO 1.88 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)
PM2.53.09 µg/m³
PM103.93 µg/m³
O373.88 µg/m³
NO24.86 µg/m³
SO21.81 µg/m³
CO143.58 µg/m³
NH30.68 µg/m³
NO1.88 µg/m³