Today | Weather | Sunday, December 14, 2025

Weather in Hillsboro, Oregon

04:59 AM
Now
Cloudy Weather
43° F
Feels Like 45°
Precipitation 37 %
Wind 4 mph
Humidity 96 %
Today
Cloudy Weather
Day 52°
Night 46°
Precipitation 55 %
Wind 4 mph
UV Index (0 - 11+) 0

Hillsboro Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Rainy Weather

Day

50°

Night

36°

Wind

6 mph

Precipitation

96 %

Air Quality in Hillsboro

NOW
22 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.87 µg/m³
PM10 4.84 µg/m³
O3 0.024 ppm
NO2 0.9 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.03 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)
PM2.53.87 µg/m³
PM104.84 µg/m³
O347.61 µg/m³
NO21.63 µg/m³
SO20.19 µg/m³
CO126.5 µg/m³
NH30.03 µg/m³
NO0 µg/m³