Today | Weather | Monday, April 27, 2026

Weather in Boston, Massachusetts

10:56 PM
Now
Night
48° F
Feels Like 48°
Precipitation 0 %
Wind 5 mph
Humidity 72 %
Today
Night
Day 61°
Night 37°
Precipitation 0 %
Wind 6 mph

Boston Weather Forecast Updated

16 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Rainy Weather

Day

55°

Night

46°

Wind

20 mph

UV Index

3

Precipitation

92 %

Air Quality in Boston

NOW
31 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.68 µg/m³
PM10 4.05 µg/m³
O3 0.034 ppm
NO2 6.3 ppb
SO2 0.2 ppb
CO 0.17 ppm
NH3 0.41 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)
PM2.52.68 µg/m³
PM104.05 µg/m³
O366.58 µg/m³
NO211.79 µg/m³
SO20.65 µg/m³
CO199.19 µg/m³
NH30.41 µg/m³
NO0 µg/m³