Today | Weather | Sunday, August 9, 2026

Weather in Worcester, Massachusetts

02:55 AM
Now
Night
70° F
Feels Like 70°
Precipitation 3 %
Wind 8 mph
Humidity 89 %
Today
Cloudy Weather
Day 88°
Night 64°
Precipitation 25 %
Wind 10 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

9 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 9, 2025)
Cloudy Night

Day

82°

Night

63°

Wind

7 mph

Precipitation

2 %

Air Quality in Worcester

NOW
27 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 6.45 µg/m³
PM10 8.25 µg/m³
O3 0.024 ppm
NO2 4.2 ppb
SO2 0.6 ppb
CO 0.16 ppm
NH3 0.08 µg/m³
NO 0 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)
PM2.56.45 µg/m³
PM108.25 µg/m³
O346.5 µg/m³
NO27.98 µg/m³
SO21.63 µg/m³
CO188.64 µg/m³
NH30.08 µg/m³
NO0 µg/m³