Aurora in Portland on September 25, 2026

September 25, 2026

Portland change region

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Probability of aurora in Portland

Probability of aurora as of end of day, September 25, 2026, Portland time

1 % Portland

Aurora intensity index

Auroral intensity index (2.7) and estimated minimum latitude of auroral observations at zenith as of the end of September 25, 2026, Portland time

Aurora over North America

Changes in the auroral oval on September 25, 2026 in United States from the beginning to the end of the day, Coordinated Universal Time (UTC)

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Aurora in the northern hemisphere

Changes in the auroral oval on September 25, 2026 in the northern hemisphere from the beginning to the end of the day, Coordinated Universal Time (UTC)

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Probability of aurora in cities of United States

Estimated probabilities of aurora observations at zenith for cities in United States as of end of day September 25, 2026.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

2 % Seattle

0 % Detroit

1 % Portland

0 % Boston

0 % Madison

5 % Bismarck

1 % Olympia

2 % Helena

2 % Saint Paul

30 % Fairbanks

13 % Anchorage

16 % Juneau

6 % Hooper Bay

15 % Nome

24 % Kotzebue

28 % Utqiagvik

6 % Bethel

16 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from September 24 to 25, 2026 in the northern hemisphere, Portland time. Maximum — 4.2/10

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