Today | Weather | Tuesday, September 8, 2026

Weather in Worcester, Massachusetts

09:51 PM
Now
Cloudy Night
64° F
Feels Like 64°
Precipitation 0 %
Wind 5 mph
Humidity 82 %
Today
Cloudy Night
Day 77°
Night 57°
Precipitation 0 %
Wind 6 mph

Worcester Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 8, 2025)
Cloudy Night

Day

68°

Night

50°

Wind

5 mph

Precipitation

0 %

Air Quality in Worcester

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

Pollutant Concentrations:

PM2.5 8.82 µg/m³
PM10 11.34 µg/m³
O3 0.026 ppm
NO2 8.1 ppb
SO2 0.3 ppb
CO 0.18 ppm
NH3 0.29 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)
PM2.58.82 µg/m³
PM1011.34 µg/m³
O350.12 µg/m³
NO215.28 µg/m³
SO20.87 µg/m³
CO202.43 µg/m³
NH30.29 µg/m³
NO0 µg/m³