Today | Weather | Wednesday, December 24, 2025

Weather in Worcester, Massachusetts

11:19 AM
Now
Cloudy Weather
36° F
Feels Like 23°
Precipitation 44 %
Wind 20 mph
UV Index (0 - 11+) 1
Humidity 67 %
Today
Snowy Weather
Day 36°
Night 25°
Precipitation 55 %
Wind 14 mph
UV Index (0 - 11+) 2

Worcester Weather Forecast Updated

34 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 24, 2024)
Snowy Weather

Day

32°

Night

21°

Wind

9 mph

UV Index

2

Precipitation

79 %

Air Quality in Worcester

NOW
25 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.5 µg/m³
PM10 0.8 µg/m³
O3 0.027 ppm
NO2 2 ppb
SO2 0.1 ppb
CO 0.16 ppm
NH3 0.16 µg/m³
NO 0.71 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)
PM2.50.5 µg/m³
PM100.8 µg/m³
O353.75 µg/m³
NO23.76 µg/m³
SO20.34 µg/m³
CO185.57 µg/m³
NH30.16 µg/m³
NO0.71 µg/m³