(DNAINFO)  Nicole Levy — Vying for the title of “most unbearable” were Union Square and Times Square. Temperatures on the uptown 4/5/6 platform at Union Square reached 96.6 degrees, according to our digital thermometer. The relative humidity (or the ratio of the current absolute humidity to the highest possible absolute humidity, a point at which the air can’t hold any more vapor) was 55 percent. Plug the two into this equation, and it felt like 109 degrees.

On the platform for downtown N/Q/R trains, DNAinfo measured a temperature of 96 degrees and a relative humidity of 60 percent, making it feel like 110 degrees.

Source: We Measured Subway Station Temperatures and Barely Survived – Union Square – DNAinfo.com New York