Portland, US Clear Sky Chart
low confidence ⓘ
Tonight's forecast keeps changing between updates — the score is less certain; check again nearer dusk. We compare how much tonight's score has moved across our recent forecast updates, a score that's held steady is more trustworthy.
Confidence reflects how trustworthy the forecast is, it doesn't change the score.
Stargazing in Portland, US
Portland shares Seattle's Pacific Northwest cloud cover, but also its rewards when clear. Summer months (July–September) offer the most reliable observing, with dry east-wind patterns bringing excellent transparency. The Oregon high desert (2–3 hours east) is outstanding for dark-sky observing, with the Oregon Star Party drawing enthusiasts from across the region. Mount Hood and the Columbia Gorge provide dramatic observing backdrops. Winter storms are frequent, but breaks between systems can be very clear.
Portland, US Stargazing FAQ
Where is the best dark sky near Portland, Oregon?∨
When is the best time to stargaze in Portland?∨
How many clear nights does Portland get?∨
Stargazing guides
Is Tonight Good for Stargazing?
The answer depends on five things you can check right now.
Light Pollution & the Bortle Scale
How dark is your sky: and what difference does it make?
What Planets Are Visible Tonight?
Real visibility data for all 7 naked-eye and telescope planets, calculated for your location.
Meteor Shower Calendar 2026
Every shower this year: peak dates, expected rates, moon interference, and the two you absolutely cannot miss.