How to use it
Start with your city score
Great and Good mean it is worth checking the sky. Possible means camera-first or drive-north conditions. Low means wait for a stronger alert.
Northern lights forecast tonight
Can you see the aurora tonight?
Aurora Forecast Now turns NOAA space weather data and cloud cover into a city-level viewing chance for the northern lights.
Generated from NOAA OVATION grid. Bright dots mark stronger aurora probability across North America.
City forecast
Best northern lights chances now
Scores combine NOAA aurora intensity, Kp forecast, latitude, and the best cloud window in the next 24 hours.
Yellowknife
Northwest Territories
83
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 11
Canada
Fairbanks
Alaska
76
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 6%
Aurora 5
United States
Reykjavik
Capital Region
71
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 2
Iceland
Anchorage
Alaska
66
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 4%
Aurora 1
United States
Edmonton
Alberta
60
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 3
Canada
Calgary
Alberta
52
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
Canada
Winnipeg
Manitoba
52
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 1%
Aurora 1
Canada
Grand Forks
North Dakota
48
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Duluth
Minnesota
47
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
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City pages for tonight and tomorrow
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Yellowknife
Northwest Territories
83
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 11
Canada
Fairbanks
Alaska
76
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 6%
Aurora 5
United States
Reykjavik
Capital Region
71
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 2
Iceland
Anchorage
Alaska
66
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 4%
Aurora 1
United States
Edmonton
Alberta
60
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 3
Canada
Calgary
Alberta
52
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
Canada
Winnipeg
Manitoba
52
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 1%
Aurora 1
Canada
Grand Forks
North Dakota
48
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Duluth
Minnesota
47
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Marquette
Michigan
46
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Bangor
Maine
44
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Burlington
Vermont
44
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Minneapolis
Minnesota
44
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Seattle
Washington
44
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 31%
Aurora 0
United States
Portland
Maine
43
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Fargo
North Dakota
47
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Spokane
Washington
46
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 11%
Aurora 0
United States
Helena
Montana
45
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 15%
Aurora 0
United States
Montreal
Quebec
45
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
Canada
Ottawa
Ontario
45
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
Canada
Green Bay
Wisconsin
44
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
Missoula
Montana
44
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 24%
Aurora 0
United States
Toronto
Ontario
43
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
Canada
Buffalo
New York
42
10:00 PM to 2:00 AM local time
Kp 4.3
Cloud 0%
Aurora 0
United States
What matters
Kp is only one signal
Kp helps describe storm strength, but local visibility also depends on aurora oval position, clouds, twilight, moonlight, and light pollution.
Update strategy
Built for cached refreshes
The static MVP can rebuild from official feeds. A Worker/KV layer can later refresh popular cities every few minutes during storm watches.
Data sources
Official space weather, plain-English forecast
WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: Jun 28: None (Below G1) Jun 29: G1 (Minor) Jun 30: G1 (Minor) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
FAQ
Northern lights forecast basics
What Kp do I need to see the northern lights?
High-latitude cities can see aurora at lower Kp values. Mid-latitude cities often need Kp 5 or higher, plus clear skies and a dark northern horizon.
Why does my city have a low score during a storm watch?
A storm watch describes global geomagnetic activity. Local visibility also depends on where the aurora oval sits, your latitude, clouds, twilight, and light pollution.
How often should this forecast update?
The MVP can rebuild every 15 to 60 minutes. During a G2 or stronger watch, a Worker cache can refresh popular cities more frequently.