Today | Weather | Tuesday, June 9, 2026

Weather in Hillsboro, Oregon

03:41 PM
Now
Cloudy Weather
66° F
Feels Like 66°
Precipitation 48 %
Wind 12 mph
UV Index (0 - 11+) 2
Humidity 47 %
Today
Partly Sunny with Showers
Day 66°
Night 46°
Precipitation 80 %
Wind 12 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Hillsboro Weather Forecast Updated

46 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 9, 2025)
Cloudy Weather

Day

97°

Night

48°

Wind

4 mph

UV Index

9

Precipitation

0 %

Air Quality in Hillsboro

NOW
32 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.72 µg/m³
PM10 1.84 µg/m³
O3 0.035 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.08 ppm
NH3 0.04 µg/m³
NO 0.03 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)
PM2.50.72 µg/m³
PM101.84 µg/m³
O367.82 µg/m³
NO20.34 µg/m³
SO20.25 µg/m³
CO97.3 µg/m³
NH30.04 µg/m³
NO0.03 µg/m³