Night Sky Tonight in Sierra Vista

The live score above pulls today's forecast and runs it through StarCast's scoring model, factoring in cloud cover, moon illumination, Bortle class, humidity, and atmospheric transparency. Above 70 is an excellent night for astrophotography. Below 40, conditions are poor. The score updates daily.

Sierra Vista sits at 4,600 feet in the Sulphur Springs Valley of southeastern Arizona, at the base of the Huachuca Mountains. This corner of Arizona is home to some of the best dark skies in the continental United States: the Chiricahua Mountains, Cochise County grasslands, and Sky Island ranges create an enormous swath of Bortle Class 2 to 3 darkness across southeastern Arizona and into New Mexico. The nearby Miller Peak Wilderness and Ramsey Canyon are accessible shooting locations. Fort Huachuca's military reservation to the north and west maintains strict light-control requirements, which directly benefits night sky quality around Sierra Vista. The Huachuca Mountains rise to over 9,000 feet, offering quick elevation gain for shooters wanting improved transparency and darker southern horizons.

Sierra Vista's southern latitude makes it one of the best places in the country to photograph the galactic core. The core is visible from mid-February through November, with an unusually long and well-positioned season. From May through August, the core rises early in the evening and climbs high enough to fill the southern sky. Monsoon season in July and August adds humidity and convective cloud risk, but Sierra Vista's position in the rain shadow of the Huachucas means it often stays clearer than the mountains above it. This is one of the premier locations in the Southwest for high-altitude galactic core framing due to the combination of latitude and dark surrounding terrain.