Burbank at 4:30PM today had 5 chargers in use (1 out of order) and 4 people waiting. Temperature was 102F (39C). I was told at the Service Center: 1) Max supercharge rate is guaranteed only at temps of 28C or less. 2) The superchargers can only be cooled by fans. 3) If one person leaves on a hot day when a supercharger is busy, it has no chance to cool off before the next person pulls in. 4) Therefore the new arrival's charge rate will be severely slowed down because of the heat. I was told in the 90-110 amp range. I've had my car since April 2. I've had only two hot weather supercharges, one in Fresno June 2 and one in Inyokern June 12. In both cases I was the only car at the supercharger and it was at its usual speedy rate. I interpret this as meaning you can expect slow charging if you hit any popular charger on a hot day. One more reason to bypass Tejon for Buttonwillow, which hopefully will have some empty chargers with time to cool down.