Washington, DC, is sweltering under another humid summer spell, with heat index values soaring near 100 degrees Fahrenheit. Today, seven Smithsonian museums—featuring exhibits from the National Museum of the American Indian to the S. Dillon Ripley Center—had to shutter their doors due to a mechanical issue affecting their cooling systems.

This isn't the first time such an incident has occurred; last summer, four locations faced similar disruptions caused by central plant issues, only to reopen after three days. Concerns remain about potential impacts on collections that must be maintained under strict climate conditions.

No official word yet on a reopening timeline, but visitors can check the Smithsonian's virtual visitor center page for further updates. The city remains scorching outside these closed halls, making one wonder if more than just exhibits are in need of cooling.