Aurora Forecast Tonight:
Predictive Alerts When the Northern Lights Are Coming

The Kp index is a scale from 0 to 9 that measures geomagnetic activity worldwide. Higher Kp values mean the aurora can be seen at lower latitudes. A Kp of 5+ means aurora may be visible as far south as 50° latitude, while Kp 7+ can push visibility to 45°. pingAurora uses Kp index forecasts to predict when conditions are favorable for aurora viewing.

pingAurora combines NOAA SWPC Kp index forecasts with Open-Meteo cloud cover data to give you the best available prediction. While no aurora forecast is 100% accurate, our system sends advance alerts hours before optimal viewing windows — giving you real planning time rather than last-minute guesses.

After subscribing, enter your city and set your Kp threshold and cloud cover preference. When our forecast model predicts conditions that meet your criteria, pingAurora sends you an advance alert — so you know before the show starts, not after it's over.

pingAurora offers two notification channels: email and Telegram. Email works globally with any email address. Telegram delivers instant push notifications with no frequency limits — ideal if you want alerts as soon as your aurora forecast threshold is crossed.

Yes, pingAurora is completely free to use. We built it because existing aurora tracking tools require you to check apps or websites manually. We wanted to flip that: get one notification when the time is right, and nothing when it's not.

Absolutely. Cloud cover is one of the most critical factors for actually seeing the northern lights. Even with a high Kp index, a cloudy sky will block your view. pingAurora checks the local cloud cover forecast for your city and only sends alerts when clear or mostly clear skies are predicted alongside favorable Kp conditions.

pingAurora checks NOAA Kp index data and Open-Meteo cloud cover forecasts every 10 minutes. Alerts are triggered automatically when conditions match your subscribed thresholds. To avoid notification spam, we cap alerts at one per subscriber every 6 hours even if conditions remain favorable.

Yes, every notification includes a direct unsubscribe link. You can also visit the unsubscribe page anytime without needing to log in. Your email or Telegram ID is immediately removed from our database and you will not receive any further alerts.