Today | Weather | Sunday, November 23, 2025

Weather in Hillsboro, Oregon

10:42 AM
Now
Cloudy Weather
46° F
Feels Like 46°
Precipitation 44 %
Wind 4 mph
UV Index (0 - 11+) 0
Humidity 96 %
Today
Rainy Weather
Day 48°
Night 34°
Precipitation 96 %
Wind 2 mph
UV Index (0 - 11+) 0

Hillsboro Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (November 23, 2024)
Rainy Weather

Day

50°

Night

43°

Wind

7 mph

Precipitation

94 %

Air Quality in Hillsboro

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.34 µg/m³
PM10 3.94 µg/m³
O3 0.029 ppm
NO2 1.1 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0.05 µg/m³
NO 0.06 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)
PM2.53.34 µg/m³
PM103.94 µg/m³
O356.18 µg/m³
NO22.11 µg/m³
SO20.16 µg/m³
CO142.99 µg/m³
NH30.05 µg/m³
NO0.06 µg/m³