An alert when the aurora can reach your own sky, the hours it is dark enough, and a camera that stacks a sharp shot.
AuroraCue: Aurora ForecastAn alert when the aurora can reach your own sky, the hours it is dark enough, and a camera that stacks a sharp shot.
Northern lights tonight in Idaho
Tonight the forecast peak is Kp 3.7. From northern Idaho: not expected. From Boise: not expected.
The next three nights
| Night (9 pm to 3 am) | Peak Kp | Northern Idaho | Boise |
|---|---|---|---|
| Wed, Nov 4 | 3.7 | Not expected | Not expected |
| Thu, Nov 5 | 2.3 | Not expected | Not expected |
| Fri, Nov 6 | n/a | No forecast yet | No forecast yet |
What Idaho needs
The aurora reaches the northern edge of Idaho at about Kp 5.4, and Boise at about Kp 8.0. Kp is NOAA's 0-9 index of geomagnetic activity; the higher it goes, the farther south the aurora can be seen.
How to see it
- Get away from city lights and face north, with a clear view of the horizon.
- The best hours are usually 10 pm to 2 am, and clouds hide everything, so check the sky too.
- A phone camera on a long exposure often shows color the eye misses.
Northern lights tonight by city in Idaho
From the cities that need the least Kp to the most:
- Sandpoint: about Kp 5.8
- Coeur d'Alene: about Kp 6.1
- Idaho Falls: about Kp 7.7
- Boise City: about Kp 8.0
- Meridian: about Kp 8.0
- Caldwell: about Kp 8.0
- Pocatello: about Kp 8.0
- Nampa: about Kp 8.0
- Twin Falls: about Kp 8.4
Forecast: NOAA Space Weather Prediction Center 3-day Kp forecast, refreshed every few hours. The visibility rule is approximate.