Aurora Borealis in Markham

Canada · 43.87°, -79.27° · geomagnetic 53.1° · needs Kp 7

Tonight's aurora forecast for Markham

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Peak chance of a visible display tonight, from the same model the Revon app runs. Markham needs Kp 7 to see anything at all, and tonight the forecast peaks at Kp 5.0. Short of the threshold, which is what most nights look like here.

Tonight Tue 08 Sep
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Get the full 30-night forecast in Revon

Updated 2026-09-08 10:35 UTC

Local aurora guide for Markham

Markham is located at 53.1° 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 Markham where conditions are suitable for aurora viewing.

The historical record spans from 2016 to 2026.

The best months for aurora viewing in Markham are May, August, and September.

These months align with periods of darkness suitable for observing the aurora.

Markham experiences a Bortle 8 sky, indicating significant light pollution.

Areas with Bortle 4 conditions are located 63 km east-south-east of Markham. Bortle 5 conditions are found 43 km north near Georgina.

Local terrain features include Dicksons Hill, Heise Hill, Simeon Lake, Haynes Lake, and Recreation Island.

Dicksons Hill is a local hill situated 9.4 km north of Markham.

Heise Hill is another hill located 11.9 km north-west of Markham.

Simeon Lake and Haynes Lake are nearby lakes, found 14.3 km and 15.3 km north-west of Markham, respectively. Recreation Island is an island 22.1 km west-north-west of Markham.

There have been 63 verified aurora reports within 300 km of Markham between January 2015 and December 2016.

The record of viable aurora nights spans from 2016 to 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) · Aurorasaurus verified positive reports

Know when it is worth going outside

Revon watches the Markham forecast and pushes an alert when the odds for tonight clear your threshold — no checking, no guessing.

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Nearby towns

Forecasts for places within reach of Markham.