This study compared criterion to minimally invasive, practical measures of core (T[subscript c]) and skin (T[subscript sk) temperature during 30 min of moderate-intensity cycle exercise in a heat chamber (35°C, 60% rH). T[subscript c] was monitored using a core temperature pill (T[subscript c](Pill))] and tympanic thermometer (T[subscript c(Tymp)) during rest, exercise, and recovery in 15 participants. T[subscript sk] was monitored using hard-wired skin thermistors attached to a data logger (T[subscript sk(T))] and a thermal imaging camera (T[subscript sk(IR))] in 11 participants. T[subscript c] measurement resulted in no significant difference (p > 0.05), a mean bias of 0.1°C, coefficient of variation (CV%) of 1.0%, and correlation of r = 0.74 between devices. T[subscript sk] measurement resulted in a significant difference (p = 0.01), a mean bias of 0.6°C, CV% of 2.3%, and correlation of r = 0.61 between devices. T[subscript c(Tymp)] demonstrated acceptable agreement with T[subscriptc(Pill)]; however, caution is advised when using T[subscript sk(IR)] to give accurate measures of T[subscript sk] during exercise.