Today | Weather | Tuesday, September 23, 2025

Weather in Hillsboro, Oregon

01:16 AM
Now
Night
59° F
Feels Like 59°
Precipitation 0 %
Wind 5 mph
Humidity 75 %
Today
Sunny Weather
Day 86°
Night 50°
Precipitation 0 %
Wind 8
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Hillsboro Weather Forecast Updated

Last updated on

Air quality in Hillsboro

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

Pollutant Concentrations:

PM2.5 7.07 µg/m³
PM10 8.20 µg/m³
O₃ 24.45 ppb
NO₂ 6.24 ppb
SO₂ 0.51 ppb
CO 168.30 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors