Aurora in Helena on October 10, 2025

October 10, 2025

Helena change region

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Probability of aurora in Helena

Probability of aurora as of end of day, October 10, 2025, Helena time

1 % Helena

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of October 10, 2025, Helena time

Aurora over North America

Changes in the auroral oval on October 10, 2025 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 10, 2025 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 10, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

1 % Seattle

0 % Detroit

0 % Portland

0 % Boston

1 % Madison

3 % Bismarck

0 % Olympia

1 % Helena

2 % Saint Paul

17 % Fairbanks

6 % Anchorage

9 % Juneau

3 % Hooper Bay

6 % Nome

11 % Kotzebue

19 % Utqiagvik

3 % Bethel

8 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from October 9 to 10, 2025 in the northern hemisphere, Helena time

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