Aurora in Helena on October 31, 2026

October 31, 2026

Helena change region

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Probability of aurora in Helena

Probability of aurora as of end of day, October 31, 2026, Helena time

2 % Helena

Aurora intensity index

Auroral intensity index (3.2) and estimated minimum latitude of auroral observations at zenith as of the end of October 31, 2026, Helena time

Aurora over North America

Changes in the auroral oval on October 31, 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 October 31, 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 October 31, 2026.

0 % Washington

0 % New York

1 % Chicago

0 % Philadelphia

1 % Seattle

0 % Detroit

0 % Portland

0 % Boston

1 % Madison

4 % Bismarck

1 % Olympia

2 % Helena

3 % Saint Paul

24 % Fairbanks

9 % Anchorage

13 % Juneau

4 % Hooper Bay

10 % Nome

17 % Kotzebue

27 % Utqiagvik

4 % Bethel

11 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from October 30 to 31, 2026 in the northern hemisphere, Helena time. Maximum — 9.5/10

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