noun
severe heat; intense heat; oppressive heat
Describes extremely hot weather conditions, often used in weather reports or to express discomfort from heat.
今日は劇暑で、外に出るのがつらい。
Today's severe heat makes it hard to go outside.
気象庁は明日も劇暑が続くと予想している。
The weather agency predicts that the intense heat will continue tomorrow.
Compound of 劇 (intense, severe) and 暑 (heat). The exact origin is uncertain, but it follows a common pattern of combining intensity kanji with 暑 to describe extreme heat.