Aurora Borealis in Issaquah
United States · 47.53°, -122.03° · geomagnetic 53.1° · needs Kp 7
Tonight's aurora forecast for Issaquah
1%
Peak chance of a visible display tonight, from the same model the Revon app runs. Issaquah 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 Issaquah
Issaquah is at a geomagnetic latitude of 53.1°.
Auroras visible at this latitude typically require a Kp of 7.
On average, there are 3.2 nights per year with auroral visibility.
The best months for aurora viewing in Issaquah are May, September, and August.
These months align with the darker periods of the year.
Issaquah experiences a Bortle scale rating of 6.
Areas with a Bortle rating of 4 are located 21 km east near King County.
The horizon is characterized by Lake Sammamish State Park to the north-north-west, Grand Ridge to the east-north-east, Jensens Cove to the north-north-west, Yellow Lake to the north-north-east, and Alexander Beach to the north-north-west.
Lake Sammamish State Park is located 3.9 km north-north-west of Issaquah.
Grand Ridge is a ridge situated 4.2 km east-north-east of Issaquah.
Jensens Cove, a bay, is 4.5 km north-north-west of Issaquah. Yellow Lake is 4.8 km north-north-east of Issaquah, and Alexander Beach is 5.0 km north-north-west of Issaquah.
Between 2016 and 2026, there were 3.2 viable aurora nights per year.
The record span for these observations is from April 2, 2016, to March 30, 2026.
Notable qualifying nights 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).
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 Issaquah 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 Issaquah.