Aurora over Boston — tonight's forecast
Live geomagnetic conditions vs what Boston, USA actually needs to see the aurora borealis (northern lights).
⚪ Unlikely tonight
Current activity is below what this location needs — enable an alert and we'll ping you when a storm changes that.
Kp now
NaN
Tonight's max (forecast)
—
Boston needs
Kp 7.2
Geomagnetic lat.
51.6°
Live data: NOAA SWPC planetary K-index · refreshes every 30 min · get a free storm alert
What it takes to see the aurora borealis (northern lights) from Boston
Aurora visibility is set by your geomagneticlatitude — your position relative to Earth's magnetic pole, not the geographic one. Boston sits at 51.6° geomagnetic. The auroral oval hovers near 66° in quiet conditions and expands toward the equator as geomagnetic storms strengthen: roughly 2° per step of the Kp index. For Boston only severe storms (Kp 7.2+) — a few nights per solar cycle, like the May 2024 superstorm — bring the aurora into view low on the northern horizon.
How to actually catch it
- Get away from city lights with a clear view of the northern horizon — light pollution is the #1 killer of borderline displays.
- Best window: 22:00–02:00 local time; best seasons: around the equinoxes, and dark winter months at high latitudes.
- Your camera sees more than your eyes: a 5-10s phone night-mode exposure reveals green/red glow invisible to the naked eye.
- Storms spike with little warning — enable a free Cosmik alert and check the live forecast when Kp jumps.
FAQ
Can you see the aurora from Boston?
Yes, when geomagnetic activity is strong enough. Boston sits at geomagnetic latitude 51.6°, which means the aurora becomes visible on the northern horizon at roughly Kp 7.2 — only during severe geomagnetic storms.
What Kp index does Boston need for aurora?
About Kp 7.2. The auroral oval sits near 66° geomagnetic latitude in quiet conditions and pushes roughly 2° toward the equator with each Kp step; Boston's geomagnetic latitude is 51.6°.
When is the best time to see the aurora?
Around local midnight (22:00–02:00), on dark clear nights away from city lights, and statistically around the equinoxes (March/April and September/October). Solar maximum — happening now — delivers the most storms.
Better aurora odds near Boston
- Aurora forecast for Fairbanks — needs Kp 0.2
- Aurora forecast for Reykjavík — needs Kp 0
- Aurora forecast for Trondheim — needs Kp 1.5
- Aurora forecast for Tampere — needs Kp 3.4
- Aurora forecast for Anchorage — needs Kp 2
- Aurora forecast for Turku — needs Kp 3.8
More from the sky over Boston
The aurora isn't the only show: the ISS passes over Boston on a predictable schedule, and Cosmik's live 3D map shows everything in orbit right now.