Today | Weather | Sunday, October 12, 2025

Weather in Hartford, Connecticut

12:03 PM
Now
Rainy Weather
61° F
Feels Like 54°
Precipitation 51 %
Wind 16 mph
UV Index (0 - 11+) 8
Humidity 74 %
Today
Rainy Weather
Day 63°
Night 55°
Precipitation 96 %
Wind 16 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.

Hartford Weather Forecast Updated

55 minutes ago
Last updated on

Air Quality in Hartford

NOW
39 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.93 µg/m³
PM10 4.63 µg/m³
O3 0.042 ppm
NO2 2.3 ppb
SO2 0.4 ppb
CO 0.10 ppm
NH3 0.09 µg/m³
NO 0.38 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)
PM2.51.93 µg/m³
PM104.63 µg/m³
O382.2 µg/m³
NO24.24 µg/m³
SO21.13 µg/m³
CO111.84 µg/m³
NH30.09 µg/m³
NO0.38 µg/m³