Today | Weather | Tuesday, January 13, 2026

Weather in Worcester, Massachusetts

03:26 PM
Now
Cloudy Weather
39° F
Feels Like 34°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 56 %
Today
Cloudy Weather
Day 41°
Night 34°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 2

Worcester Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (January 13, 2025)
Snowy Weather

Day

36°

Night

23°

Wind

6 mph

UV Index

2

Precipitation

55 %

Air Quality in Worcester

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

Pollutant Concentrations:

PM2.5 18.33 µg/m³
PM10 24.98 µg/m³
O3 0.026 ppm
NO2 16.3 ppb
SO2 3.5 ppb
CO 0.25 ppm
NH3 0.38 µg/m³
NO 3.94 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)
PM2.518.33 µg/m³
PM1024.98 µg/m³
O350.92 µg/m³
NO230.66 µg/m³
SO29.05 µg/m³
CO282.87 µg/m³
NH30.38 µg/m³
NO3.94 µg/m³