If you planning to travel to Chemical Heritage Foundation Museum, Philadelphia, Pennsylvania, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 12:19 PM. The temperature feels like 21.45 with a humidity level of 57 so dress accordingly. Cloud coverage is 29 percent with visibility at 14.9 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 2 MPH. At the end of the day don’t miss the sunset at 9:40 PM.