Aurora Forecast Tonight in San Francisco
Aurora season in San Francisco runs from October to March.
Aurora Forecast AI Tracker
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Save San Francisco in Aurora Forecast AI Tracker to follow the local Northern Lights forecast, hourly aurora visibility and best viewing window. Get notified when Kp activity, darkness and cloud cover create better chances to see the aurora.
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Best Months to See the Northern Lights in San Francisco
Best: October to March Peak: January and December
January February March October November December
The aurora season in San Francisco usually runs from October to March.
San Francisco sits at 40.79° magnetic latitude, which means aurora typically becomes visible when the Kp index reaches 6.0+. Sightings here are exceptionally rare, requiring a major geomagnetic storm. The best viewing opportunities occur during the dark season months between October and March.
Other aurora viewing spots near San Francisco
Frequently Asked Questions
What Kp index is needed to see the Northern Lights in San Francisco?
In San Francisco, a Kp index around 6+ usually gives a realistic chance of visible aurora, depending on darkness, clouds, and light pollution.
What are the best months to see the Northern Lights in San Francisco?
The best months to see the Northern Lights in San Francisco are typically October to March, when nights are darker and aurora viewing conditions are better.
Where is the best place to see the Northern Lights in San Francisco?
The best places to see the Northern Lights in San Francisco are dark areas away from city lights, with a clear view toward the northern horizon.