West Haven-Sylvan, OR: Current UV Index and Hourly Forecast

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On this page, you can find the current UV Index and hourly 5 day UV Index forecast for West Haven-Sylvan, Washington County, Oregon (OR). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.

UV Index Data sourced from the NOAA.

As of 11:35 PM PDT on Sunday, August 31, 2025, the UV index in West Haven-Sylvan, OR is at a low level of 0. At this time of the night, the sun has already set and there is no exposure to UV radiation. The UV Index will remain at 0 through the early morning hours until around 8:00 AM tomorrow.

As the day progresses tomorrow (September 1, 2025), the UV Index will rise to 0.4 between 8:00 AM - 9:00 AM, still considered low. The UV Index in West Haven-Sylvan will continue to rise through the morning, reaching a moderate level of 2.5 between 10:00 AM - 11:00 AM and a high level of 5.5 between 1:00 PM - 2:00 PM. The UV Index will peak between 1:00 PM and 2:00 PM with a high reading of 5.5.

For the protection of your health against UV exposure, we highly recommended wearing sunglasses, generously applying broad-spectrum SPF 15+ strength sunscreen on exposed skin, covering the body with sun-protective clothing and a wide-brim hat, and reducing the time spent outdoors in the sun during peak hours.

After reaching its peak for the day, the UV Index will gradually decline through the afternoon and evening. It will return to moderate levels at 2:00 PM and then drop to low levels again from 5:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 8:00 PM.

Summary of Hourly UV Index Forecast for Today and Tomorrow in West Haven-Sylvan, OR

Current UV Index in Nearby Cities

• West Slope, OR - 0
• Cedar Hills, OR - 0
• Cedar Mill, OR - 0
• Raleigh Hills, OR - 0
• Marlene Village, OR - 0
• Garden Home-Whitford, OR - 0
• Beaverton, OR - 0
• Oak Hills, OR - 0
• Metzger, OR - 0
• Bethany, OR - 0
• Aloha, OR - 0
• Portland, OR - 0
• Rockcreek, OR - 0
• Tigard, OR - 0
• Dunthorpe, OR - 0
• Lake Oswego, OR - 0
• Bull Mountain, OR - 0
• King City, OR - 0
• Hillsboro, OR - 0
• Durham, OR - 0