Today | Weather | Thursday, June 25, 2026

Weather in Cambridge, Massachusetts

11:18 PM
Now
Cloudy Weather
70° F
Feels Like 66°
Precipitation 7 %
Wind 7 mph
Humidity 70 %
Today
Rainy Weather
Day 79°
Night 63°
Precipitation 62 %
Wind 6 mph

Cambridge Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 25, 2025)
Cloudy Weather

Day

91°

Night

68°

Wind

8 mph

UV Index

10

Precipitation

25 %

Air Quality in Cambridge

NOW
51 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 12.27 µg/m³
PM10 18.93 µg/m³
O3 0.044 ppm
NO2 1.2 ppb
SO2 0.3 ppb
CO 0.10 ppm
NH3 0.08 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.512.27 µg/m³
PM1018.93 µg/m³
O386.79 µg/m³
NO22.21 µg/m³
SO20.72 µg/m³
CO115.45 µg/m³
NH30.08 µg/m³
NO0 µg/m³