Today | Weather | Saturday, August 29, 2026

Weather in Hillsboro, Oregon

11:22 AM
Now
Rainy Weather
64° F
Feels Like 63°
Precipitation 51 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 58 %
Today
Partly Sunny with Showers
Day 73°
Night 48°
Precipitation 55 %
Wind 6 mph
UV Index (0 - 11+) 5

Hillsboro Weather Forecast Updated

55 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 29, 2025)
Cloudy Night

Day

84°

Night

55°

Wind

5 mph

Precipitation

2 %

Air Quality in Hillsboro

NOW
22 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.92 µg/m³
PM10 1.68 µg/m³
O3 0.024 ppm
NO2 0.6 ppb
SO2 0.1 ppb
CO 0.09 ppm
NH3 0.14 µg/m³
NO 0.34 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)
PM2.50.92 µg/m³
PM101.68 µg/m³
O346.92 µg/m³
NO21.13 µg/m³
SO20.32 µg/m³
CO107.1 µg/m³
NH30.14 µg/m³
NO0.34 µg/m³