Aurora in Greater Sudbury on October 4, 2026

October 4, 2026

Greater Sudbury change region

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Probability of aurora in Greater Sudbury

Probability of aurora as of end of day, October 4, 2026, Greater Sudbury time

6 % Greater Sudbury

Aurora intensity index

Auroral intensity index (4.0) and estimated minimum latitude of auroral observations at zenith as of the end of October 4, 2026, Greater Sudbury time

Aurora over North America

Changes in the auroral oval on October 4, 2026 in Canada 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 4, 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 Canada

Estimated probabilities of aurora observations at zenith for cities in Canada as of end of day October 4, 2026.

3 % Ottawa

2 % Toronto

4 % Montreal

2 % Vancouver

8 % Calgary

17 % Edmonton

2 % Hamilton (Canada)

6 % Quebec

16 % Winnipeg

2 % Kitchener

17 % Saskatoon

11 % Red deer

38 % Salluit

59 % Arviat

59 % Yellowknife

20 % Whitehorse

50 % Thompson

9 % Prince george

46 % Rankin Inlet

26 % Iqaluit

39 % Inuvik

9 % Cambridge Bay

Aurora intensity over 2 days

Changes in the auroral intensity index from October 3 to 4, 2026 in the northern hemisphere, Greater Sudbury time. Maximum — 8.5/10

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