Aurora in San Jose on December 9, 2025

December 9, 2025

San Jose change region

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Probability of aurora in San Jose

Probability of aurora as of end of day, December 9, 2025, San Jose time

0 % San Jose

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of December 9, 2025, San Jose time

Aurora over North America

Changes in the auroral oval on December 9, 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 December 9, 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 December 9, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

1 % Seattle

0 % Detroit

0 % Portland

0 % Boston

0 % Madison

5 % Bismarck

0 % Olympia

2 % Helena

2 % Saint Paul

42 % Fairbanks

18 % Anchorage

24 % Juneau

9 % Hooper Bay

21 % Nome

33 % Kotzebue

40 % Utqiagvik

9 % Bethel

23 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from December 8 to 9, 2025 in the northern hemisphere, San Jose time

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