Today | Weather | Monday, April 27, 2026

Weather in Hillsboro, Oregon

07:00 PM
Now
Cloudy Weather
59° F
Feels Like 57°
Precipitation 0 %
Wind 8 mph
UV Index (0 - 11+) 0
Humidity 60 %
Today
Cloudy Weather
Day 61°
Night 46°
Precipitation 6 %
Wind 5 mph
UV Index (0 - 11+) 2

Hillsboro Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 27, 2025)
Cloudy Weather

Day

61°

Night

45°

Wind

4 mph

UV Index

2

Precipitation

9 %

Air Quality in Hillsboro

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.87 µg/m³
PM10 1.96 µg/m³
O3 0.041 ppm
NO2 0.4 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.18 µg/m³
NO 0.09 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)
PM2.50.87 µg/m³
PM101.96 µg/m³
O379.73 µg/m³
NO20.75 µg/m³
SO20.24 µg/m³
CO123.4 µg/m³
NH30.18 µg/m³
NO0.09 µg/m³