Today | Weather | Tuesday, June 2, 2026

Weather in Boston, Massachusetts

04:57 AM
Now
Night
46° F
Feels Like 45°
Precipitation 0 %
Wind 6 mph
Humidity 83 %
Today
Cloudy Weather
Day 73°
Night 52°
Precipitation 0 %
Wind 6 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.

Boston Weather Forecast Updated

39 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 2, 2025)
Cloudy Weather

Day

70°

Night

50°

Wind

11 mph

UV Index

10

Precipitation

1 %

Air Quality in Boston

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.29 µg/m³
PM10 3.74 µg/m³
O3 0.025 ppm
NO2 3.5 ppb
SO2 0.4 ppb
CO 0.12 ppm
NH3 0.16 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)
PM2.52.29 µg/m³
PM103.74 µg/m³
O348.31 µg/m³
NO26.6 µg/m³
SO21.05 µg/m³
CO141.05 µg/m³
NH30.16 µg/m³
NO0 µg/m³