Today | Weather | Thursday, September 24, 2026

Weather in Boston, Massachusetts

08:06 PM
Now
Cloudy Night
55° F
Feels Like 52°
Precipitation 0 %
Wind 8 mph
Humidity 67 %
Today
Cloudy Night
Day 64°
Night 52°
Precipitation 0 %
Wind 8 mph

Boston Weather Forecast Updated

47 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 24, 2025)
Rainy Weather

Day

66°

Night

63°

Wind

8 mph

Precipitation

90 %

Air Quality in Boston

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.72 µg/m³
PM10 4.75 µg/m³
O3 0.040 ppm
NO2 1.9 ppb
SO2 0.4 ppb
CO 0.16 ppm
NH3 0.09 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)
PM2.5 – 1.72 µg/m³
PM10 – 4.75 µg/m³
O3 – 79.25 µg/m³
NO2 – 3.65 µg/m³
SO2 – 1.02 µg/m³
CO – 181.15 µg/m³
NH3 – 0.09 µg/m³
NO – 0 µg/m³