Today | Weather | Saturday, January 17, 2026

Weather in Boston, Massachusetts

11:36 AM
Now
Snowy Weather
39° F
Feels Like 37°
Precipitation 53 %
Wind 6 mph
UV Index (0 - 11+) 1
Humidity 69 %
Today
Snowy Weather
Day 43°
Night 30°
Precipitation 91 %
Wind 7 mph
UV Index (0 - 11+) 1

Boston Weather Forecast Updated

31 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (January 17, 2025)
Cloudy Weather

Day

37°

Night

28°

Wind

7 mph

UV Index

2

Precipitation

5 %

Air Quality in Boston

NOW
39 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.59 µg/m³
PM10 5.93 µg/m³
O3 0.042 ppm
NO2 1.6 ppb
SO2 0.6 ppb
CO 0.13 ppm
NH3 0.59 µg/m³
NO 0.15 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)
PM2.52.59 µg/m³
PM105.93 µg/m³
O382.15 µg/m³
NO23 µg/m³
SO21.48 µg/m³
CO151.87 µg/m³
NH30.59 µg/m³
NO0.15 µg/m³