Today | Weather | Sunday, March 15, 2026

Weather in Worcester, Massachusetts

05:20 PM
Now
Cloudy Weather
41° F
Feels Like 36°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 1
Humidity 37 %
Today
Cloudy Weather
Day 41°
Night 34°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 2

Worcester Weather Forecast Updated

5 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 15, 2025)
Cloudy Weather

Day

64°

Night

46°

Wind

9 mph

UV Index

4

Precipitation

0 %

Air Quality in Worcester

NOW
52 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.2 µg/m³
PM10 3.08 µg/m³
O3 0.055 ppm
NO2 0.9 ppb
SO2 0.3 ppb
CO 0.14 ppm
NH3 0.14 µg/m³
NO 0.17 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)
PM2.52.2 µg/m³
PM103.08 µg/m³
O3107.27 µg/m³
NO21.72 µg/m³
SO20.8 µg/m³
CO158 µg/m³
NH30.14 µg/m³
NO0.17 µg/m³