Today | Weather | Thursday, September 25, 2025

Weather in Gresham, Oregon

05:16 AM

Now

55° F

Feels Like 55°

Precipitation 0 %

Wind 5 mph

Humidity 82 %

Today

Day 72°

Night 48°

Precipitation 1 %

Wind 10

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.

Gresham Weather Forecast Updated

43 minutes ago

Last updated on September 25, 2025 4:33 AM

Air quality in Gresham

NOW

65 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.46 µg/m³

PM10 24.34 µg/m³

O₃ 22.35 ppb

NO₂ 7.38 ppb

SO₂ 0.31 ppb

CO 143.34 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

View Hourly Air Quality Forecast