Aurora Borealis in Arlington
United States · 48.20°, -122.13° · geomagnetic 53.7° · needs Kp 7
Tonight's aurora forecast for Arlington
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Arlington 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 10:36 UTC
Local aurora guide for Arlington
Arlington is located at 53.7° geomagnetic latitude. Auroras are typically visible at this latitude when the Kp index reaches 7.
On average, there are about 3.2 nights per year in Arlington where conditions are suitable for aurora viewing.
The best months for aurora viewing in Arlington are May, August, and September. These months offer a good balance of darkness and potential aurora activity.
Arlington has a Bortle scale rating of 5, indicating a suburban sky with some light pollution. Areas to the east-north-east and west-north-west near Snohomish County offer darker skies with a Bortle rating of 4.
Nearby geographical features include Lake Armstrong to the north, Bryant Lake to the north-north-west, Grandview Recreation Center to the north-east, Ebey Hill to the east-north-east, and Prestliens Bluff to the west-north-west.
Between 2016 and 2026, there have been approximately 3.2 nights per year suitable for aurora viewing in Arlington. This is based on historical Kp index data.
The historical record shows qualifying nights for aurora viewing, such as March 20, 2026, January 20, 2026, January 19, 2026, November 12, 2025, and November 11, 2025, when the Kp index reached levels of 7.0 or higher.
Sources: Revon analysis of NOAA planetary Kp · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0)
Know when it is worth going outside
Revon watches the Arlington 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 Arlington.