Today | Weather | Saturday, May 16, 2026

Weather in Worcester, Massachusetts

12:32 AM
Now
Cloudy Night
59° F
Feels Like 54°
Precipitation 10 %
Wind 12 mph
Humidity 70 %
Today
Cloudy Weather
Day 73°
Night 57°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

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.

Worcester Weather Forecast Updated

35 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 16, 2025)
Cloudy Weather

Day

79°

Night

61°

Wind

6 mph

UV Index

9

Precipitation

25 %

Air Quality in Worcester

NOW
10 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 2.35 µg/m³
PM10 3.5 µg/m³
O3 0.011 ppm
NO2 6 ppb
SO2 0.2 ppb
CO 0.16 ppm
NH3 0.3 µg/m³
NO 0.02 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)
PM2.52.35 µg/m³
PM103.5 µg/m³
O321.04 µg/m³
NO211.28 µg/m³
SO20.46 µg/m³
CO179.89 µg/m³
NH30.3 µg/m³
NO0.02 µg/m³