Can you see the northern lights in Washington tonight?
Live aurora odds for Washington — tonight's Kp versus the Kp 4.1 the state needs, plus where and when to look.
Tonight Washington needs Kp 4.1; the current Kp is 1.67, so aurora odds over Washington are low — Cosmik tracks it live, free.
🟠 Low odds over Washington tonight
Tonight's Kp is below the Kp 4.1 Washington needs. Set an alert and we'll tell you when a storm brings the aurora into reach.
Kp now
1.67
Tonight max
1.67
Washington needs
Kp 4.1
Geomag. latitude
52.9°
Live NOAA SWPC data, refreshed every 30 min.
🌌 Get the aurora call before you step outside
We alert you when the forecast says it's finally worth looking up.
Free · no account · unsubscribe anytime
✈ TelegramAurora across all of Washington
The aurora season runs September through March, when nights are long and dark. Around the equinoxes (late September and March) geomagnetic activity statistically peaks, so those are the strongest windows for Washington.
Track the aurora in Washington cities
Each city page shows its own live Kp verdict — the odds shift with your exact latitude:
- Northern lights in Seattle · needs Kp 4.3
- Northern lights in Portland · needs Kp 5.3
- Northern lights in Spokane · needs Kp 3.8
- Northern lights in Eugene · needs Kp 6.1
- Northern lights in Boise · needs Kp 5.6
- Northern lights in Reno · needs Kp 8
Northern lights in Washington — FAQ
Can you see the northern lights in Washington?
Yes, on the right night. Washington needs the planetary Kp index to reach Kp 4.1 for the aurora to appear low on the northern horizon. That happens during geomagnetic storms — Cosmik shows tonight's live odds above so you know before you drive out.
What Kp does Washington need for the northern lights?
Washington needs a Kp of about 4.1 for the aurora to become visible from a dark site with a clear northern horizon. That figure comes from the state's geomagnetic latitude (52.9°): the higher your geomagnetic latitude, the lower the Kp you need.
When is the best time to see the aurora in Washington?
Look between about 10 pm and 2 am local time, on a clear, moonless night, from a spot with no light pollution and an open view to the north. The season peaks September–March, and geomagnetic storms are most frequent near the equinoxes. Cosmik tracks the live Kp so you can catch the exact night it spikes.
