With the humidity kicking up, along with 100 degree temperatures and air quality impacted by brush fires in the San Gabriel mountains, today may be one of those days to just stay inside. With the Claremont high temperature reaching 104 Tuesday, a hot air mass continues to sit right over Southern California with no where to go. That means these triple digit numbers are with us for the next week, maybe longer. Summer has arrived! And let’s be sure to keep our thermostats close to 78 degrees to avoid any power issues between 3 to 10 p.m. COURIER photo/Peter Weinberger