Today | Weather | Friday, April 17, 2026

Weather in Cambridge, Massachusetts

03:25 AM
Now
Rainy Weather
54° F
Feels Like 50°
Precipitation 40 %
Wind 7 mph
Humidity 92 %
Today
Stormy Weather
Day 68°
Night 48°
Precipitation 90 %
Wind 8 mph
UV Index (0 - 11+) 3

Cambridge Weather Forecast Updated

33 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 17, 2025)
Sunny Weather

Day

59°

Night

39°

Wind

15 mph

UV Index

7

Precipitation

0 %

Air Quality in Cambridge

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

Pollutant Concentrations:

PM2.5 15.3 µg/m³
PM10 22.56 µg/m³
O3 0.039 ppm
NO2 2.4 ppb
SO2 0.2 ppb
CO 0.15 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 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)
PM2.515.3 µg/m³
PM1022.56 µg/m³
O375.74 µg/m³
NO24.51 µg/m³
SO20.54 µg/m³
CO170.3 µg/m³
NH30.16 µg/m³
NO0 µg/m³