PITTSBURGH — (WPXI) – A Code Orange Air Quality Alert will be in effect Monday for Washington, Allegheny, Butler, Beaver, Armstrong, Westmoreland and Fayette counties. Unhealthy air quality for people with asthma, lung disease, heart disease, young children, and older adults. If you are in this group, you may want to limit your time outside. The humidity will increase overnight, and the heat turns up Monday. Make sure to find a way to stay cool on Monday with highs expected to be in the upper 80s near 90 degrees. It won’t be as warm Tuesday and Wednesday with highs reaching the low 80s. The heat and humidity return again Thursday with highs in the mid to upper 80s with the chance of a few showers or storms in spots for the end of the work week.