Today | Weather | Wednesday, October 28, 2026

Weather in Worcester, Massachusetts

02:30 PM
Now
Cloudy Weather
54° F
Feels Like 55°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3
Humidity 45 %
Today
Cloudy Weather
Day 54°
Night 45°
Precipitation 0 %
Wind 5 mph
UV Index (0 - 11+) 3
Overnight Frost 5 AM – 8 AM

Worcester Weather Forecast Updated

13 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 28, 2025)
Rainy Night

Day

54°

Night

39°

Wind

9 mph

Precipitation

49 %

Air Quality in Worcester

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.74 µg/m³
PM10 4.01 µg/m³
O3 0.039 ppm
NO2 2.3 ppb
SO2 0.5 ppb
CO 0.15 ppm
NH3 0.34 µg/m³
NO 1.25 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)
PM2.5 – 2.74 µg/m³
PM10 – 4.01 µg/m³
O3 – 76.31 µg/m³
NO2 – 4.37 µg/m³
SO2 – 1.29 µg/m³
CO – 173.38 µg/m³
NH3 – 0.34 µg/m³
NO – 1.25 µg/m³