Today | Weather | Monday, April 27, 2026

Weather in Worcester, Massachusetts

04:36 PM
Now
Cloudy Weather
66° F
Feels Like 66°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 3
Humidity 30 %
Today
Sunny Weather
Day 68°
Night 39°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

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

54 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Cloudy Weather

Day

52°

Night

45°

Wind

17 mph

UV Index

4

Precipitation

55 %

Air Quality in Worcester

NOW
64 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.43 µg/m³
PM10 8.25 µg/m³
O3 0.059 ppm
NO2 1.7 ppb
SO2 0.4 ppb
CO 0.14 ppm
NH3 0.24 µg/m³
NO 0.57 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)
PM2.57.43 µg/m³
PM108.25 µg/m³
O3114.97 µg/m³
NO23.18 µg/m³
SO20.96 µg/m³
CO164.71 µg/m³
NH30.24 µg/m³
NO0.57 µg/m³