Can you see the northern lights in New Hampshire tonight?
Live aurora odds for New Hampshire — tonight's Kp versus the Kp 5.8 the state needs, plus where and when to look.
Tonight New Hampshire needs Kp 5.8; the current Kp is 3.33, so aurora odds over New Hampshire are low — Cosmik tracks it live, free.
🟠 Low odds over New Hampshire tonight
Tonight's Kp is below the Kp 5.8 New Hampshire needs. Set an alert and we'll tell you when a storm brings the aurora into reach.
Kp now
3.33
Tonight max
2.67
New Hampshire needs
Kp 5.8
Geomag. latitude
52.3°
Live NOAA SWPC data, refreshed every 30 min.
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Get an alert the night New Hampshire can actually see it
Tonight's Kp vs the Kp New Hampshire needs (Kp 5.8), plus cloud cover over New Hampshire — sent when a storm is forecast.
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Aurora across all of New Hampshire
New Hampshire 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 New Hampshire cities
Each city page shows its own live Kp verdict — the odds shift with your exact latitude:
- Northern lights in Boston · needs Kp 6.7
- Northern lights in Providence · needs Kp 6.9
- Northern lights in Hartford · needs Kp 6.8
- Northern lights in Albany · needs Kp 6.5
- Northern lights in New Haven · needs Kp 6.9
- Northern lights in New York · needs Kp 7
Northern lights in New Hampshire — FAQ
Can I see the northern lights tonight in New Hampshire?
Unlikely: tonight's Kp is 3.3, below the Kp 5.8 New Hampshire needs. A free Cosmik alert emails you the moment the forecast reaches it. Updated every 30 minutes from NOAA SWPC data.
Can you see the northern lights in New Hampshire?
Yes, on the right night. New Hampshire needs the planetary Kp index to reach Kp 5.8 for the aurora to appear low on the northern horizon. That happens during geomagnetic storms — Cosmik shows tonight's live odds above so you know before you drive out.
What Kp does New Hampshire need for the northern lights?
New Hampshire needs a Kp of about 5.8 for the aurora to become visible from a dark site with a clear northern horizon. That figure comes from the state's geomagnetic latitude (52.3°): the higher your geomagnetic latitude, the lower the Kp you need.
When is the best time to see the aurora in New Hampshire?
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.
Which direction should I look for the aurora in New Hampshire?
North. From New Hampshire the auroral oval lies toward the north magnetic pole, so the aurora appears low on the northern horizon first. Pick a spot with an open northward view, away from city lights — your phone's night mode picks up glow your eyes miss.
