Aurora Borealis in Mount Vernon
United States · 48.42°, -122.33° · geomagnetic 53.9° · needs Kp 7
Tonight's aurora forecast for Mount Vernon
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Mount Vernon 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.
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Updated 2026-09-08 10:36 UTC
Local aurora guide for Mount Vernon
Mount Vernon is located at 53.9° geomagnetic latitude. Auroras are typically visible at this latitude during periods of high geomagnetic activity, specifically when the Kp index reaches 7 or higher.
On average, there are about 3.2 nights per year when conditions are favorable for aurora viewing in this region. This is based on historical data spanning from April 2, 2016, to March 30, 2026.
The best months for aurora viewing in Mount Vernon are May, August, and September. These months generally offer a good balance of darkness and potential aurora activity.
Mount Vernon experiences a Bortle 4 sky, indicating a relatively dark sky with some impact from artificial light. Areas near Sedro-Woolley, approximately 11 km to the north-east, also have Bortle 4 conditions.
The local horizon features include Gages Lake to the north-north-west, Barney Lake to the north-east, Big Rock to the east, and Burlington Hill to the north. Debay's Slough State Wildlife Area is also located to the north-east.
Geographic features near Mount Vernon include Gages Lake, located to the north-north-west, and Barney Lake to the north-east. Big Rock, a mountain, is situated to the east, while Burlington Hill, another mountain, is to the north.
Debay's Slough State Wildlife Area is a notable wildlife reserve positioned to the north-east of Mount Vernon.
Between January 1, 2015, and December 31, 2016, there were 57 verified aurora reports within a 300 km radius of Mount Vernon.
Notable qualifying nights with high Kp values include March 20, 2026 (Kp 7.0), January 20, 2026 (Kp 7.67), January 19, 2026 (Kp 8.67), November 12, 2025 (Kp 7.33), and November 11, 2025 (Kp 8.67). These dates fall within the recorded span of April 2, 2016, to March 30, 2026.
Sources: Revon analysis of NOAA planetary Kp · Revon location dataset · Falchi 2016 World Atlas of artificial night sky brightness · GeoNames (CC BY 4.0) · Aurorasaurus verified positive reports
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Revon watches the Mount Vernon 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 Mount Vernon.