Northern lights over Salt Lake City tonight — aurora forecast
Live geomagnetic conditions vs what Salt Lake City, 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
1.33
Tonight's max (forecast)
5
Salt Lake City needs
Kp 7.3
Geomagnetic lat.
47.7°
Live data: NOAA SWPC planetary K-index · refreshes every 30 min · get a free storm alert
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Aurora over Salt Lake City needs Kp 7.3. We email you the moment tonight's forecast reaches it — free.
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Tonight's Kp vs the Kp Salt Lake City needs (Kp 7.3), plus cloud cover over Salt Lake City — sent when a storm is forecast.
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What it takes to see the aurora borealis (northern lights) from Salt Lake City
Aurora visibility is set by your geomagnetic latitude — your position relative to Earth's magnetic pole, not the geographic one. Salt Lake City sits at 47.7° 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 Salt Lake City only severe storms (Kp 7.3+) — 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 — get a free storm alert and check Aurora forecast when Kp jumps.
FAQ
Can I see the northern lights tonight in Salt Lake City?
Unlikely: tonight's Kp is 5, below the Kp 7.3 Salt Lake City 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 aurora from Salt Lake City?
Yes, when geomagnetic activity is strong enough. Salt Lake City sits at geomagnetic latitude 47.7°, which means the aurora becomes visible on the northern horizon at roughly Kp 7.3 — only during severe geomagnetic storms.
What Kp index does Salt Lake City need for aurora?
About Kp 7.3. The auroral oval sits near 66° geomagnetic latitude in quiet conditions and pushes roughly 2° toward the equator with each Kp step; Salt Lake City's geomagnetic latitude is 47.7°. You don't need the oval directly overhead — NOAA notes the aurora can be seen on the horizon from up to 1000 km away, but that reach grows with the storm: this figure credits none of it near the oval, where low-Kp aurora is faint and low, and up to 2.5 Kp at mid-latitudes, where storm aurora is tall and bright.
Which direction should I look for the aurora in Salt Lake City?
North. From Salt Lake City 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.
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.
Aurora forecasts for cities near Salt Lake City
- Aurora forecast for Boise — needs Kp 6.7
- Aurora forecast for Las Vegas — needs Kp 9.2
- Aurora forecast for Denver — needs Kp 7.3
- Aurora forecast for Billings — needs Kp 5.6
- Aurora forecast for Colorado Springs — needs Kp 7.6
- Aurora forecast for Reno — needs Kp 8.2
This city elsewhere on Cosmik
More from the sky over Salt Lake City
The aurora isn't the only show: the ISS passes over Salt Lake City on a predictable schedule, the Sun's live flare level tells you when the next storm is brewing, and Cosmik's live 3D map shows everything in orbit right now.
