Aurora in San Jose on April 18, 2026

April 18, 2026

San Jose change region

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Probability of aurora in San Jose

Probability of aurora as of end of day, April 18, 2026, 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 April 18, 2026, San Jose time

Aurora over North America

Changes in the auroral oval on April 18, 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 April 18, 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 April 18, 2026.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

3 % Seattle

0 % Detroit

1 % Portland

0 % Boston

1 % Madison

7 % Bismarck

2 % Olympia

4 % Helena

3 % Saint Paul

40 % Fairbanks

18 % Anchorage

24 % Juneau

10 % Hooper Bay

19 % Nome

30 % Kotzebue

39 % Utqiagvik

10 % Bethel

23 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from April 17 to 18, 2026 in the northern hemisphere, San Jose time

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