Arxan (Mongolian: "Hot Springs") is a county-level city in the Hinggan League of northeastern Inner Mongolia, China.
Arxan is located in the northwest of Hinggan League, with latitude ranging from 46ð 39' to 47ð 39' N and longitude ranging from 119ð 28' to 121ð 23' E; the maximal northâÂÂsouth extent is , while the maximal eastâÂÂwest width is . It spans part of the southwest of the Greater Khingan Range.
Due to the upper-mid latitude and elevation of around , the climate of Arxan is a subarctic (Köppen Dwc), with strong monsoonal influence, severely cold winters and warm, rainy summers, and low temperatures averaging below freezing for eight calendar months; the monthly 24-hour average temperature stays below freezing for six calendar months. The monthly 24-hour average temperature ranges from in January to in July, and the annual mean is . For much of the year, diurnal temperature variation is large and frequently in excess of . Nearly three-fourths of the annual precipitation occurs from June to September; however, precipitation is frequent year-round, with both frequency and relative humidity peaking in summer and there being a secondary humidity peak during the winter.
Arxan is divided into 4 subdistricts and 4 towns.
Arxan National Forest Park is located in Arxan. The park attracts tourists drawn by its landscape of solidified lava formations, crater lakes and dense forests.
Arxan is served by the Arxan Yi'ershi Airport.