There's no doubt it got REALLY hot earlier this week in the Bay Area, but imagine being on a BART train during that heatwave with no air conditioning!
KTVU's Jana Katsuyama took an instant temperature reader onto the BART trains during the evening commute to see how hot it got. One train got up to 107 degrees! Clearly the A/C wasn't working properly in this case but can you imagine that ride home? Yikes!