Arnold is a city in Westmoreland County, Pennsylvania. It is part of the Pittsburgh Metro Area, and is considered a suburb of the city. It has a total area of 0.8 square miles. 0.1 square mile of the area is water, and the rest is land. It was settled in the mid nineteenth century, and incorporated initially as a borough in 1896. It was incorporated as a city in 1939.
Administrative and support and waste management services, construction and accommodation and food services are the major commercial activities here. A number of local family-owned business are run here. Valley High School, a middle school, and four elementary schools comprise the public education system here. The closest hospital is the UPSC St. Margaret, located about 10 miles away in Pittsburgh. The cost of living here is 16.20% lower than the country average.
This place gets about 39 inches of rain annually. The number of days with measurable precipitation is 143. Snowfall is about 22 inches annually.