Aurora in Helsinki on August 21, 2025

August 21, 2025

Helsinki change region

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Probability of aurora in Helsinki

Probability of aurora as of end of day, August 21, 2025, Helsinki time

2 % Helsinki

Aurora intensity index

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

Aurora over Europe

Changes in the auroral oval on August 21, 2025 in Europe 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 August 21, 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 Europe

Estimated probabilities of aurora observations at zenith for cities in Europe as of end of day August 21, 2025.

0 % London

0 % Berlin

0 % Madrid

0 % Rome

0 % Amsterdam

0 % Paris

0 % Vienna

0 % Bucharest

0 % Warsaw

0 % Budapest

0 % Belgrade

0 % Prague

0 % Sofia

0 % Brussels

2 % Helsinki

0 % Dublin

0 % Vilnius

0 % Riga

1 % Tallinn

2 % Oslo

0 % Copenhagen

10 % Reykjavik

Aurora intensity over 2 days

Changes in the auroral intensity index from August 20 to 21, 2025 in the northern hemisphere, Helsinki time

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