Today | Weather | Saturday, September 19, 2026

Weather in Brockton, Massachusetts

04:01 PM
Now
Cloudy Weather
64° F
Feels Like 68°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 3
Humidity 46 %
Today
Cloudy Weather
Day 64°
Night 43°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 5

Brockton Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 19, 2025)
Night

Day

81°

Night

48°

Wind

6 mph

Precipitation

1 %

Air Quality in Brockton

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.62 µg/m³
PM10 2.56 µg/m³
O3 0.041 ppm
NO2 0.4 ppb
SO2 0.3 ppb
CO 0.18 ppm
NH3 0.12 µg/m³
NO 0.12 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)
PM2.51.62 µg/m³
PM102.56 µg/m³
O380.74 µg/m³
NO20.69 µg/m³
SO20.73 µg/m³
CO207.64 µg/m³
NH30.12 µg/m³
NO0.12 µg/m³