Another heat wave will scorch the Saucon Valley and other parts of eastern Pennsylvania through mid-week, forecasters say.

Local high temperatures reached the low 90s Monday afternoon and will likely be even hotter Tuesday and Wednesday. Tuesday’s high is forecast to be 95 degrees, and Wednesday’s high temperature is expected to be around 94.

Due to high humidity that is accompanying the heat, it will feel like 100 degrees or more at times, according to a National Weather Service heat advisory for Lehigh and Northampton counties from 11 a.m. Tuesday to 8 p.m. Wednesday.

Public safety officials say anyone spending time outside should stay hydrated, take breaks in the shade or in air conditioning, consider wearing light, loose-fitting clothing and take precautions to avoid being overcome by the heat.

In addition to public pools and water parks, some local fire companies are helping their residents cool off by turning on their hoses. The Coopersburg Fire Company planned to host a Cool Down Night in Southern Lehigh Living Memorial Park Monday from 7:15 to 8:30 p.m. In a Facebook event, the fire company said it would also hand out free ice pops while supplies lasted.

Including Monday, there have been about 10 days when it has been 90 degrees or hotter so far this summer. A heat wave is generally declared when the mercury reaches 90 for three consecutive days.

After Wednesday, there will be a considerable drop in temperatures later in the week, according to the current forecast. The National Weather Service predicts highs in the low 80s on Thursday and the mid 70s Friday, with a chance of showers.

Pleasant weather is in the forecast for the weekend, with highs in the upper 70s to low 80s and sunny skies.