Aurora in Portland on December 21, 2025

December 21, 2025

Portland change region

Home › Aurora › Portland › December 21, 2025

Probability of aurora in Portland

Probability of aurora as of end of day, December 21, 2025, Portland time

0 % Portland

Aurora intensity index

Auroral intensity index and estimated minimum latitude of auroral observations at zenith as of the end of December 21, 2025, Portland time

Aurora over North America

Changes in the auroral oval on December 21, 2025 in United States from the beginning to the end of the day, Coordinated Universal Time (UTC)

Movie in HD PNG HTML

Aurora in the northern hemisphere

Changes in the auroral oval on December 21, 2025 in the northern hemisphere from the beginning to the end of the day, Coordinated Universal Time (UTC)

Movie in HD PNG HTML

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 21, 2025.

0 % Washington

0 % New York

0 % Chicago

0 % Philadelphia

0 % Seattle

0 % Detroit

0 % Portland

0 % Boston

0 % Madison

2 % Bismarck

0 % Olympia

1 % Helena

1 % Saint Paul

24 % Fairbanks

10 % Anchorage

13 % Juneau

5 % Hooper Bay

11 % Nome

19 % Kotzebue

21 % Utqiagvik

4 % Bethel

13 % Cordova

Aurora intensity over 2 days

Changes in the auroral intensity index from December 20 to 21, 2025 in the northern hemisphere, Portland time

API: JSON | TXT