Today | Weather | Tuesday, April 28, 2026

Weather in Hartford, Connecticut

02:45 AM
Now
Night
45° F
Feels Like 45°
Precipitation 0 %
Wind 4 mph
Humidity 87 %
Today
Cloudy Weather
Day 70°
Night 41°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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.

Hartford Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (April 28, 2025)
Sunny Weather

Day

73°

Night

48°

Wind

7 mph

UV Index

8

Precipitation

0 %

Air Quality in Hartford

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

Pollutant Concentrations:

PM2.5 11.01 µg/m³
PM10 18.85 µg/m³
O3 0.026 ppm
NO2 15.6 ppb
SO2 0.9 ppb
CO 0.26 ppm
NH3 0.33 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)
PM2.511.01 µg/m³
PM1018.85 µg/m³
O351.35 µg/m³
NO229.29 µg/m³
SO22.47 µg/m³
CO298.74 µg/m³
NH30.33 µg/m³
NO0 µg/m³