Auroras (northern lights) in Thunder bay — Sep 30, 2025
Probability of northern lights in Thunder bay
Information as of 2025-09-30 23:45 (end of day) local time in Thunder bay
11 %
Thunder bay
Aurora intensity index
Auroral intensity index and the theoretically possible latitude of observations for nighttime in the Western Hemisphere as of 2025-09-30 23:45 (end of day) local time
Northern lights (auroras) over North America
Changes from 2025-09-30 to 2025-10-01 UTC
Northern lights (auroras) in the northern hemisphere
Changes from 2025-09-30 to 2025-10-01 UTC
Probability of northern lights (auroras) in cities of Canada
Information as of 2025-09-30 23:45 (end of day) local time in Thunder bay
3 %
Ottawa
2 %
Toronto
4 %
Montreal
2 %
Vancouver
8 %
Calgary
19 %
Edmonton
2 %
Hamilton (Canada)
5 %
Quebec
16 %
Winnipeg
2 %
Kitchener
17 %
Saskatoon
12 %
Red deer
34 %
Salluit
55 %
Arviat
55 %
Yellowknife
20 %
Whitehorse
49 %
Thompson
9 %
Prince george
42 %
Rankin Inlet
24 %
Iqaluit
36 %
Inuvik
7 %
Cambridge Bay
Polar auroras over the past 2 days
Changes in the auroral intensity index from 2025-09-29 to 2025-09-30 local time
