Northern lights tonight in Boise, Idaho: unlikely
Unlikely tonight. Boise needs about Kp 8.1; tonight's forecast reaches Kp 1.7, cloud cover 71 %. Dark from 8:01 PM to 7:01 AM, moon 33 % lit.
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Tonight in Boise
| Local time | Cloud cover | Kp forecast | Aurora reaches the horizon? |
|---|---|---|---|
| 9:00 PM | 0 % | 1.7 | No |
| 10:00 PM | 2 % | 1.7 | No |
| 11:00 PM | 80 % | 1.7 | No |
| 12:00 AM | 70 % | 1.3 | No |
| 1:00 AM | 93 % | 1.3 | No |
| 2:00 AM | 97 % | 1.3 | No |
| 3:00 AM | 89 % | 1.3 | No |
| 4:00 AM | 81 % | 1.3 | No |
| 5:00 AM | 66 % | 1.3 | No |
| 6:00 AM | 100 % | 1.3 | No |
| 7:00 AM | 100 % | 1.3 | No |
Where to look in Boise
At Boise's latitude the aurora appears low on the northern horizon during geomagnetic storms (Kp 9 or more), often as a green or reddish glow rather than dancing curtains overhead. Drive away from the city lights to a place with an open view to the north – a lake shore, a field or a hilltop – and use a phone camera in night mode, which picks up color the eye misses.
A bright moon and haze both wash out a faint display; check the hourly cloud cover above and look again later in the evening, when NOAA's short-term OVATION model gives a better picture of the next hour.
Northern lights in Boise
Can I see the northern lights in Boise, Idaho tonight?
Unlikely: unlikely tonight. Boise needs about Kp 8.1; the forecast for its dark hours tonight is up to Kp 1.7, with 71 % cloud cover on average.
What Kp is needed to see the aurora in Boise, Idaho?
Boise: about Kp 8.1 (geomagnetic latitude 49.9°).
What is the best time to see the aurora?
Usually between about 10 PM and 2 AM local time, when your part of the Earth faces the night-side of the auroral oval – but during a strong storm it can appear as soon as it is dark. Give your eyes 15–20 minutes away from screens and lights.
Why can my phone see the aurora when I can't?
A phone camera's long exposure collects far more light than the eye and sees color better in the dark. At lower latitudes a faint aurora often looks grey or white to the eye and green or pink on a 3-second phone shot – try night mode pointed north.
How accurate is the forecast?
Kp forecasts a day or more ahead come from observations of the Sun and are uncertain by a step or two; the timing of a storm's arrival can be off by many hours. The OVATION model is good for the next 30–90 minutes. Check the page again in the evening.
Nearby
Sources: NOAA Space Weather Prediction Center (planetary Kp index and 3-day forecast, OVATION aurora model, G-scale outlook), Open-Meteo hourly cloud cover; sun and moon computed by 77.today. The aurora is notoriously hard to forecast beyond an hour or two – treat this as a guide.