Today | Weather | Wednesday, February 25, 2026

Weather in Hartford, Connecticut

11:36 PM
Now
Cloudy Night
32° F
Feels Like 25°
Precipitation 29 %
Wind 8 mph
Humidity 100 %
Today
Cloudy Weather
Day 43°
Night 16°
Precipitation 14 %
Wind 6 mph
UV Index (0 - 11+) 3
Overnight Frost 12 AM – 9 AM
Tomorrow Morning Frost 12 AM – 5 AM

Hartford Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 25, 2025)
Rainy Weather

Day

55°

Night

30°

Wind

6 mph

UV Index

4

Precipitation

49 %

Air Quality in Hartford

NOW
55 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 14.28 µg/m³
PM10 18.06 µg/m³
O3 0.030 ppm
NO2 14.3 ppb
SO2 1.4 ppb
CO 0.25 ppm
NH3 0.73 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 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)
PM2.514.28 µg/m³
PM1018.06 µg/m³
O359.65 µg/m³
NO226.95 µg/m³
SO23.65 µg/m³
CO283.91 µg/m³
NH30.73 µg/m³
NO0 µg/m³