Today | Weather | Friday, November 21, 2025

Weather in Hartford, Connecticut

08:28 PM
Now
Cloudy Weather
43° F
Feels Like 41°
Precipitation 0 %
Wind 5 mph
Humidity 80 %
Today
Rainy Weather
Day 48°
Night 34°
Precipitation 49 %
Wind 4 mph

Hartford Weather Forecast Updated

36 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 21, 2024)
Rainy Weather

Day

46°

Night

43°

Wind

9 mph

Precipitation

100 %

Air Quality in Hartford

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

Pollutant Concentrations:

PM2.5 23.83 µg/m³
PM10 34.8 µg/m³
O3 0.009 ppm
NO2 25.1 ppb
SO2 1.3 ppb
CO 0.41 ppm
NH3 1 µg/m³
NO 14.23 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)
PM2.523.83 µg/m³
PM1034.8 µg/m³
O318.56 µg/m³
NO247.2 µg/m³
SO23.5 µg/m³
CO465.29 µg/m³
NH31 µg/m³
NO14.23 µg/m³