Photo by Dennis

Metrorail is trekking along slower than normal today due to the region’s high temperatures. Trains are operating at 35 miles per hour at all above ground stations because the tracks are too hot for them to go any faster, according to a tweet from Metro. (While travel speeds vary, trains typically run anywhere from 15 to 55 miles per hour.)

Trains are operating at a 35 mph speed restriction at all above ground stations due to high track temperatures. System-wide delays possible.

— Metrorail Info (@Metrorailinfo) July 25, 2016

Temperatures in the D.C. region are expected to reach nearly 100 degrees today, according to the National Weather Service, but it already feels hotter than that outside. According to Capital Weather Gang, the District is the hottest city in the country today, outside of the Southwest.

Under WMATA procedures, if inspectors find that rail temperatures are higher than 135 degrees, a slow order is placed into effect for that rail line. Officials track temperatures using tools such as infrared thermal “guns” and direct contact gauges.

Since the speed restrictions are being implemented, Metrorail riders should expect system-wide delays, WMATA says. This is in addition to delays that are already taking place due to SafeTrack’s fifth surge.