When your car’s dashboard thermometer reads 129 degrees or something similar, ignore it. “If you’re starting up your car after it’s been sitting there for a while, it’s been getting radiated heat from the asphalt,” local meteorologist Nathan Tannenbaum says. Car thermometers (technically thermistors) are situated low to the ground and are particularly susceptible to ground heat. The only true measure of the temperature comes from checking “ambient air” that’s shaded from direct sun, Tannenbaum says, adding that Vegas’ ambient air is officially measured at McCarran and relayed to weather services. To paraphrase Modest Mouse: The dashboard’s melted, but you still have news radio.