City forecast
Aurora forecast for Seattle, WA
Tonight's northern lights forecast for Seattle, WA. Real-time Kp, weather, and viewing window.
Current Kp
Kp Needed Here
3-Hr Forecast
OVATION Peak
Geomagnetic Storm Level
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Live aurora data →Mean visibility probability, northern hemisphere (≥ 45° N)
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3-Day outlook
NOAA Kp forecastAbout aurora viewing in Seattle, WA
Seattle, WA sits at roughly 47.6°N, placing it in the mid–high-latitude aurora visibility band. Auroras are visible on the northern horizon during moderate storms (Kp ≥ 5) and can be overhead during severe events.
Best viewing is typically 22:00–02:00 local time. Prioritize dark-sky sites north of the city, low humidity, minimal cloud cover, and a moon that is below the horizon or in a low-illumination phase.
FAQ
Can you see the Northern Lights in Seattle, WA?
Yes, during moderate-to-strong geomagnetic storms. Seattle, WA typically needs Kp 6.4 or higher for the aurora to be visible on the northern horizon.
What Kp index is required to see the aurora in Seattle, WA?
Approximately Kp 6.4, based on a latitude of 47.6°N and NOAA's aurora forecast bands. This is an estimate — actual visibility also depends on cloud cover, moon phase, and how active the storm is.
When is the best time of year to see the Northern Lights in Seattle, WA?
Geomagnetic activity is statistically higher around the spring and fall equinoxes (March–April and September–October) due to a well-documented seasonal pattern called the Russell-McPherron effect. Long, dark nights help too — so equinox months combined with winter's extended darkness generally offer the best odds.
Where should you go outside Seattle, WA for darker skies?
Head away from downtown light pollution, ideally north-facing and toward rural or elevated areas with an unobstructed view of the northern horizon. Even 20-30 minutes outside a city center can meaningfully darken the sky.
Nearby aurora forecasts
Live aurora conditions for locations near Seattle, WA.
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