Aurora Borealis in Kerava
Finland · 60.40°, 25.11° · geomagnetic 57.9° · needs Kp 7
Tonight's aurora forecast for Kerava
28%
Peak chance of a visible display tonight, from the same model the Revon app runs. Kerava needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 4.7. Short of the threshold, which is what most nights look like here.
Get the full 30-night forecast in Revon
Updated 2026-09-08 10:35 UTC
Local aurora guide for Kerava
Kerava is located at 57.9° geomagnetic latitude. Auroras are typically visible at this latitude during intense geomagnetic storms, which are classified as Kp 7 or higher.
On average, there are 2.3 nights per year with conditions suitable for aurora viewing in this region.
The best months for aurora viewing in Kerava are September, November, and March. These months offer a good balance of darkness and potential aurora activity.
From May through August, the region experiences periods without full darkness, which can impact viewing opportunities.
Kerava has a Bortle scale rating of 7, indicating significant light pollution. For darker skies, areas like Askola (Bortle 5) or Porvoo (Bortle 4) are located within 24 km and 57 km respectively.
Local terrain features include hills such as Taskusaari and Saksankallio to the north of Kerava. Lakes like Tuusulanjärvi and Rusutjärvi are situated to the north-west.
The Lemmenlaakso Luonnonsuojelualue, a nature reserve, is located to the north-east.
Records indicate 40 verified aurora sightings within 300 km of Kerava between January 2015 and December 2016.
Notable aurora events in the region occurred on November 11-12, 2025 (Kp 8.67 and Kp 7.33) and January 19-20, 2026 (Kp 8.67 and Kp 7.67), with another event on March 20, 2026 (Kp 7.0).
Sources: Revon analysis of NOAA planetary Kp · Solar declination and hour-angle calculation · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports
Know when it is worth going outside
Revon watches the Kerava forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.
Nearby towns
Forecasts for places within reach of Kerava.