Tonight
May 21 - May 22
- 69 °F
0 percent cloud cover - 61 °F0 percent cloud cover
- 57 °F0 percent cloud cover
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Northern Lights Forecast for Portland
Portland, Oregon, United States
45°30′54.7″N ⋅ 122°40′42.2″W
Aurora data last updated at
Current local time:
No significant aurora activity is expected in Portland over the next 24 hours. Sky will be dark from 10:03 PM to 4:10 AM local time. Cloud cover around that time looks clear skies at around 0%.
Aurora Forecast for Portland, OR
Today at 2:00 PM
No activity
Cloud Cover:0%
Aurora activity
High clouds
Middle clouds
Low clouds
Fog
Aurora activity
High clouds
Middle clouds
Low clouds
Fog
Hourly aurora forecast for Portland
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3-Night Weather Forecast for Portland, OR
%22%3E%3Cpath%20fill%3D%22currentColor%22%20d%3D%22M12.262%2045.52h29.086c7.43%200%2013.172-5.626%2013.172-12.82c0-7.29-6-12.75-13.946-12.68c-3-6.047-8.507-9.54-15-9.54c-8.648%200-15.937%206.82-16.617%2015.563c-4.547%201.242-7.477%205.063-7.477%209.68c0%205.812%204.36%209.797%2010.782%209.797%22%2F%3E%3C%2Fsvg%3E){kind=small}
Tomorrow night
May 22 - May 23
- 64 °F
46 percent cloud cover - 57 °F
21 percent cloud cover - 53 °F61 percent cloud cover
Saturday night
May 23 - May 24
- 65 °F5 percent cloud cover
- 59 °F11 percent cloud cover
- 51 °F
0 percent cloud cover
Sun & Moon
Sunset
Sunrise
Dark from 10:03 PM to 04:10 AM (6 h 7 min)
Current Moon
First Quarter
32% illumination
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Long-Term Aurora Forecast for Portland, OR
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|
Thursday, May 21, 2026. Today. No aurora activity. Aurora score 0 out of 10. Waxing crescent, 29% illumination | Friday, May 22, 2026. No aurora activity. Aurora score 0 out of 10. First quarter, 40% illumination | Saturday, May 23, 2026. No aurora activity. Aurora score 0 out of 10. First quarter, 50% illumination | Sunday, May 24, 2026. No aurora activity. Aurora score 0 out of 10. First quarter, 61% illumination | |||
Monday, May 25, 2026. No aurora activity. Aurora score 0 out of 10. Waxing gibbous, 71% illumination | Tuesday, May 26, 2026. No aurora activity. Aurora score 0 out of 10. Waxing gibbous, 79% illumination | Wednesday, May 27, 2026. No aurora activity. Aurora score 0 out of 10. Waxing gibbous, 87% illumination | Thursday, May 28, 2026. No aurora activity. Aurora score 0 out of 10. Waxing gibbous, 93% illumination | Friday, May 29, 2026. No aurora activity. Aurora score 0 out of 10. Full moon, 97% illumination | Saturday, May 30, 2026. No aurora activity. Aurora score 0 out of 10. Full moon, 99% illumination | Sunday, May 31, 2026. No aurora activity. Aurora score 0 out of 10. Full moon, 100% illumination |
Monday, June 1, 2026. No aurora activity. Aurora score 0 out of 10. Full moon, 99% illumination | Tuesday, June 2, 2026. No aurora activity. Aurora score 0 out of 10. Waning gibbous, 96% illumination | Wednesday, June 3, 2026. No aurora activity. Aurora score 0 out of 10. Waning gibbous, 91% illumination | Thursday, June 4, 2026. No aurora activity. Aurora score 0 out of 10. Waning gibbous, 85% illumination | Friday, June 5, 2026. No aurora activity. Aurora score 0 out of 10. Waning gibbous, 78% illumination | Saturday, June 6, 2026. No aurora activity. Aurora score 0 out of 10. Last quarter, 69% illumination | Sunday, June 7, 2026. No aurora activity. Aurora score 0 out of 10. Last quarter, 60% illumination |
Monday, June 8, 2026. No aurora activity. Aurora score 0 out of 10. Last quarter, 49% illumination | Tuesday, June 9, 2026. No aurora activity. Aurora score 0 out of 10. Last quarter, 39% illumination | Wednesday, June 10, 2026. No aurora activity. Aurora score 0 out of 10. Waning crescent, 28% illumination | Thursday, June 11, 2026. No aurora activity. Aurora score 0 out of 10. Waning crescent, 19% illumination | Friday, June 12, 2026. No aurora activity. Aurora score 0 out of 10. Waning crescent, 10% illumination | Saturday, June 13, 2026. No aurora activity. Aurora score 0 out of 10. Waning crescent, 4% illumination | Sunday, June 14, 2026. No aurora activity. Aurora score 0 out of 10. New moon, 1% illumination |
Monday, June 15, 2026. No aurora activity. Aurora score 0 out of 10. New moon, 0% illumination | Tuesday, June 16, 2026. No aurora activity. Aurora score 0 out of 10. New moon, 3% illumination | Wednesday, June 17, 2026. No aurora activity. Aurora score 0 out of 10. Waxing crescent, 8% illumination |
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Northern Lights in Portland
Found in Oregon, Portland offers unique opportunities for aurora hunters visiting United States. Situated far south at 45.5°, the auroral oval rarely reaches this area. While it takes patience and luck, catching a display from here is an unforgettable experience.
FAQ
What Kp index do I need to see the northern lights in Portland?
In Portland, you usually need at least Kp 8 to have a reasonable chance of seeing the northern lights. Lower Kp can still bring a faint aurora display low on the northern horizon, but it is less common.
This is based on magnetic latitude, and Kp index is a global geomagnetic index, so treat it as a rule of thumb, not a location-specific guarantee.
Tonight, the NOAA Kp index forecast is 0.7 to 2.7. That is below the usual Kp index threshold for Portland, so seeing the aurora is unlikely.