Today | Weather | Thursday, October 29, 2026

Weather in Hillsboro, Oregon

01:07 PM
Now
Rainy Weather
52° F
Feels Like 52°
Precipitation 70 %
Wind 5 mph
UV Index (0 - 11+) 1
Humidity 69 %
Today
Partly Sunny with Showers
Day 55°
Night 41°
Precipitation 96 %
Wind 4 mph
UV Index (0 - 11+) 2

Hillsboro Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (October 29, 2025)
Cloudy Night

Day

59°

Night

39°

Wind

6 mph

Precipitation

0 %

Air Quality in Hillsboro

NOW
26 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.7 µg/m³
PM10 1.22 µg/m³
O3 0.028 ppm
NO2 1 ppb
SO2 0.1 ppb
CO 0.12 ppm
NH3 0.07 µg/m³
NO 0.1 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)
PM2.5 – 0.7 µg/m³
PM10 – 1.22 µg/m³
O3 – 54.34 µg/m³
NO2 – 1.89 µg/m³
SO2 – 0.24 µg/m³
CO – 132.45 µg/m³
NH3 – 0.07 µg/m³
NO – 0.1 µg/m³