Today | Weather | Thursday, February 5, 2026

Weather in Hillsboro, Oregon

05:36 PM
Now
Cloudy Night
52° F
Feels Like 52°
Precipitation 0 %
Wind 5 mph
Humidity 66 %
Today
Cloudy Weather
Day 61°
Night 34°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2

Hillsboro Weather Forecast Updated

30 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (February 5, 2025)
Snowy Weather

Day

41°

Night

30°

Wind

9 mph

UV Index

1

Precipitation

94 %

Air Quality in Hillsboro

NOW
21 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 5.07 µg/m³
PM10 6.75 µg/m³
O3 0.011 ppm
NO2 4.1 ppb
SO2 0.1 ppb
CO 0.20 ppm
NH3 0.58 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)
PM2.55.07 µg/m³
PM106.75 µg/m³
O320.93 µg/m³
NO27.63 µg/m³
SO20.28 µg/m³
CO225.02 µg/m³
NH30.58 µg/m³
NO0.06 µg/m³