Northern lights in New Hampshire tonight

New Hampshire's northernmost county, bordering Quebec and Maine. The towns of Colebrook, Pittsburg, and Dixville Notch sit near 45°N geographic (~52° geomagnetic latitude) with open farmland and forest facing north toward the Canadian border. The Connecticut Lakes area north of Pittsburg gives genuine wilderness darkness - Bortle 2 at the remoter lake positions. This is the least populated county east of the Mississippi - population density under 5 per square km. The Connecticut Lakes State Forest gives the darkest accessible sky in New Hampshire.

The northern Presidential Range and the Franconia Ridge give elevated north-facing positions in central New Hampshire. Mount Washington at 1917 m is the highest peak in the northeast, but aurora viewing from the summit is compromised by frequent cloud cover. The valley positions - Jefferson, Lancaster, and Groveton - give better sky stability with open north-facing fields. The Bretton Woods area faces north toward the Presidentials with limited light pollution from the south. Bortle 3-4 in the valley floors north of the White Mountains.

A remote lake straddling the Maine-New Hampshire border near Errol, accessible via NH-16 north of Berlin. The lake gives a north-facing open water horizon with minimal light pollution in all directions. The Umbagog National Wildlife Refuge surrounds the lake. Bortle 2-3 at the lake shore. No significant settlements within 50 km. The Errol area consistently gives some of New Hampshire's best stargazing conditions - the Androscoggin River valley is sheltered from wind and faces north across open water.