Live aurora forecast

Northern lights in Washington State tonight

Northern Washington State, USA · 54° magnetic latitude · Kp 5–6 threshold

Aurora visibility · Washington State
1/9
Unlikely tonight

Kp 1 is well below the Kp 5–6 threshold needed for aurora to be visible from Washington State.

QuietStormExtreme
Threshold
Kp 5–6
Magnetic latitude
~54°N
Bz ↓ south
- nT
Solar wind
- km/s
Density
- p/cm³
Cloud
-
Conditions right now: - Kp + Bz + solar wind + cloud + moon

Updated: 26 Jun, 01:58 UTC

7-day outlook for Washington State

Today
26 Jun
1
Quiet
Tomorrow
27 Jun
3
Quiet
Sun
28 Jun
3
Quiet
Mon
29 Jun
3
Quiet
Tue
30 Jun
3
Quiet
Wed
1 Jul
3
Quiet
Thu
2 Jul
3
Quiet

Based on CME arrival predictions from NASA DONKI. Arrival times ±6 hours.

auroratonight.space

What Kp is needed here?

Washington State sits at a magnetic latitude of approximately 54°N. The Kp index - a global measure of geomagnetic activity on a scale from 0 (quiet) to 9 (extreme storm), updated every 3 hours - needs to reach Kp 5–6 before the auroral oval expands far enough south to be visible from here.

At Kp 5–6, visibility is possible from Washington State but skies need to be clear and dark. Cloud cover and light pollution remain the main obstacles even when Kp is high enough.

Plan your viewing

Best dark sky sites near Washington State

Light pollution is the biggest obstacle after cloud cover. These sites give you the best dark northern horizon within reach.

Methow Valley / Okanogan Highlands

Get directions ↗
Bortle 2–3 240 miles / 4 hr from Seattle

The Okanogan Highlands in north-central Washington near Tonasket and Republic sit at 900-1200 m elevation with minimal light pollution. The area faces north across the Canadian border with Bortle 2-3 conditions. Ferry County Road gives open ridge positions. The Methow Valley east of the Cascades near Winthrop offers comparable darkness with a more accessible valley floor. The rain shadow of the Cascades keeps this region significantly clearer than the western slopes. A 4-hour drive from Seattle via Highway 20.

North Cascades National Park

Get directions ↗
Bortle 2 155 miles / 3 hr from Seattle

The remote northern Cascades near the Canadian border, accessible via the North Cascades Highway (SR-20, closed in winter). The park sits at 48.7°N geographic and faces north across the Skagit range. Bortle 2 in the backcountry. The Ross Lake area in the park interior gives north-facing positions at lake level with mountain silhouette foreground. The Diablo Lake overlook gives a quick accessible position from SR-20. For aurora, the park's position close to the 49th parallel and deep darkness make it Washington's most compelling designated dark sky position.

Olympic Peninsula north coast

Get directions ↗
Bortle 3 110 miles / 2 hr 30 min from Seattle

The Strait of Juan de Fuca coastline between Port Angeles and Neah Bay faces north across open water toward Vancouver Island and the Canadian coastline. The Dungeness Spit and the cliffs near Neah Bay give north-facing positions with limited light pollution to the north. Hurricane Ridge in Olympic National Park at 1600 m gives elevated sky access. For aurora, the north-facing strait positions give an ocean horizon to the north with the aurora appearing above the distant Canadian coast.

When to go

Best time to see the northern lights in Washington State

At 54°N magnetic latitude, Washington State sits at the lower end of regular aurora territory. Only the deep mid-winter months of November through January offer nights dark enough for aurora to be visible, and only then when a significant geomagnetic storm pushes the auroral oval this far south.

Activity peaks around the September and March equinoxes, when Earth's magnetic field geometry is most favourable for coupling with the solar wind. Events during these two windows tend to produce the strongest displays of the year for observers at Washington State's latitude.

Outside November through January, twilight is too bright for aurora viewing even during significant storms. The season is short, but the equinox months on either side of winter can extend it slightly when storm timing aligns.

Up to 8 locations

Unlikely
Kp 1 need Kp 5-6
Checking darkness…
Oregon

USA

Unlikely
Kp 1 need Kp 6
Checking darkness…
Idaho

USA

Unlikely
Kp 1 need Kp 6
Checking darkness…
The odds

How often does the aurora appear in Washington State?

Average nights per month the Kp reached Washington State's threshold of 5+, from 15 years of geomagnetic data (2010–2024).

1.2Jan
1.3Feb
1.6Mar
1.4Apr
1.2May
0.6Jun
1.2Jul
1.4Aug
1.5Sep
1.5Oct
1.2Nov
1.1Dec

Counts the Kp 5+ threshold only - cloud cover and local darkness are not included.
Kp data: GFZ German Research Centre for Geosciences, CC BY 4.0

Make it happen

Plan your trip to Washington State

Based on 15 years of geomagnetic data (2010–2024)

1st
March
1.6
avg aurora nights
Requires an extended stay
2nd
September
1.5
avg aurora nights
Requires an extended stay
3rd
October
1.5
avg aurora nights
Requires an extended stay

Best window

The August to October window averages 4 aurora nights - the strongest consecutive stretch of the year.

How long to stay

Aurora at this latitude requires patience - allow as many nights as possible during March.

From the community

Aurora photographs from Washington State

Real photos sourced from Wikimedia Commons.

Aurora over Washington State Aurora over Washington State
Aurora over Washington State Aurora over Washington State
Aurora over Washington State Aurora over Washington State
Aurora over Washington State Aurora over Washington State
Aurora over Washington State Aurora over Washington State
Aurora over Washington State Aurora over Washington State
Questions

Common questions about aurora in Washington State

Can you see the northern lights in Washington State?
Yes, during moderate geomagnetic storms. Northern Washington at ~54°N magnetic latitude needs Kp 5-6. The Okanogan Highlands and North Cascades near the Canadian border give the best dark-sky north-facing positions. The rain shadow of the Cascades makes eastern Washington significantly clearer than the cloud-prone western slopes. The May 2024 G5 storm produced aurora seen from Seattle and across the state.
What Kp is needed for aurora in Washington?
Kp 5 from dark sites in northern Washington - the Okanogan Highlands, North Cascades NP, and the Olympic Peninsula north coast. Kp 6 for aurora visible from Bellingham or the Seattle north suburbs. Kp 7 for visibility from Seattle itself. Washington at 54°N magnetic latitude is comparable to Maine - the threshold is similar, but Washington's mountain west location and Cascade rain shadow give better clear-sky frequency than the northeastern states.
Can you see aurora from Seattle?
During strong geomagnetic storms. Seattle sits at ~52°N magnetic latitude and needs Kp 6-7 to produce visible aurora through the city's light pollution. The May 2024 G5 storm produced photographs from Gas Works Park and the Mukilteo waterfront facing north over Puget Sound. For regular aurora events (Kp 5), driving to the Okanogan Highlands (4 hours) or Bellingham area (1.5 hours) significantly improves the prospect.
What is the best dark sky site in Washington for aurora?
The Okanogan Highlands near Tonasket give the best combination of northern latitude, elevation, and clear skies - the Cascade rain shadow keeps the area significantly drier than the Seattle region. North Cascades National Park is darker (Bortle 2) but the highway closes in winter. For year-round access with reliable clear skies, the Okanogan Highlands on the eastern Cascade slopes is the primary aurora destination in Washington State.
When is aurora season in Washington State?
September to April. The Okanogan Highlands have clearer skies in autumn and winter than the Puget Sound region. September and March are the most geomagnetically active months. Eastern Washington winter (November-February) is cold and clear under high pressure. The western Cascades are persistently overcast in winter - any aurora chasing from Washington State should focus on the eastern slopes and the Okanogan.
Photograph the aurora

Recommended gear

Tested picks for capturing the aurora on long, cold nights.

As an Amazon Associate, Aurora Tonight earns from qualifying purchases. Affiliate links never influence the forecast or which gear is recommended.

Aurora Tonight

Aurora Tonight

Add to your home screen for instant aurora alerts

Add to your home screen

Tap then Add to Home Screen for instant aurora alerts