[4] The mountain is situated in Chugach National Forest, 6.8 mi (11 km) north of Mount Ascension, 7.2 mi (12 km) west of Andy Simons Mountain, and 17 mi (27 km) north of Seward, Alaska.

[3] Precipitation runoff from the mountain drains into Kenai Lake.

Mount Adair's local name was reported in 1951 by the U.S. Geological Survey.

[3] Based on the Köppen climate classification, Mount Adair is located in a subarctic climate zone with long, cold, snowy winters, and mild summers.

This climate supports a spruce and hemlock forest on the lower slopes.