Can you see the northern lights in California tonight?
Live aurora odds for California — tonight's Kp versus the >9 the state needs, plus where and when to look.
Tonight California needs >9; the current Kp is 3, so aurora odds over California are effectively nil — Cosmik tracks it live, free.
🔵 California is too far south for the aurora
At 40.7° geomagnetic latitude, only a once-in-a-generation superstorm would push the northern lights this far south.
Kp now
3
Tonight max
5
California needs
>9
Geomag. latitude
40.7°
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Aurora across all of California
California only sees the northern lights during major geomagnetic storms, which can strike any month but are most likely near the equinoxes (September–March). On those rare nights, the aurora appears as a faint glow low on the northern horizon rather than overhead.
Track the aurora in California cities
Each city page shows its own live Kp verdict — the odds shift with your exact latitude:
- Northern lights in Los Angeles · needs >9
- Northern lights in Long Beach · needs >9
- Northern lights in Bakersfield · needs >9
- Northern lights in San Diego · needs >9
- Northern lights in Fresno · needs >9
- Northern lights in Las Vegas · needs >9
Northern lights in California — FAQ
Can you see the northern lights in California?
Realistically, no — California sits at about 40.7° geomagnetic latitude, far outside the auroral zone. It would take an exceptional, historic solar superstorm for the aurora to be visible this far south.
What Kp does California need for the northern lights?
California needs a Kp of about more than 9 (effectively unreachable) for the aurora to become visible from a dark site with a clear northern horizon. That figure comes from the state's geomagnetic latitude (40.7°): the higher your geomagnetic latitude, the lower the Kp you need.
When is the best time to see the aurora in California?
Look between about 10 pm and 2 am local time, on a clear, moonless night, from a spot with no light pollution and an open view to the north. The season peaks September–March, and geomagnetic storms are most frequent near the equinoxes. Cosmik tracks the live Kp so you can catch the exact night it spikes.
