Lehigh Valley heat wave: Highs in low‑mid 90s through Tuesday, approach 90 Wednesday
An Air Quality Action Day is in effect Monday as temperatures climb about 20 degrees above normal for mid‑May, with the hottest conditions expected Tuesday before a cold front brings relief.
High temperatures will reach the low to mid-90s Monday and Tuesday across the Lehigh Valley, around 20 degrees above normal for mid-May, according to the National Weather Service forecast.