Today | Weather | Wednesday, August 13, 2025

Boston, Massachusetts. 09:07 AM

Now

75° F

Feels Like 81°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 3

Humidity 75 %

Today

Day 90°

Night 72°

Precipitation 55 %

Wind 8 mph

UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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

Last updated on August 13, 2025 8:06 AM

Weather Forecast History

Last Year's Weather on This Day (August 13, 2024)

Day

82°

Night

64°

Wind

8 mph

UV Index

Precipitation

Air quality in Boston

NOW

65 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.85 µg/m³

PM10 13.29 µg/m³

O₃ 28.99 ppb

NO₂ 11.86 ppb

SO₂ 0.79 ppb

CO 275.62 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.