The temperature near the new National Stadium located in central Tokyo, where the Olympic marathon will start and finish, hit 30 C (86 F) at 6 a.m. on Friday, Japan-based weather service provider Weathernews said.With exactly one year to go until the 2020 Olympic women's marathon, which starts at 6 a.m., the Weathernews team measured the temperature along the route, stopping their vehicle every 5 kilometers to take readings.In addition to the sweltering heat, they also measured humidity levels of more than 70 percent as of 6 a.m."There were some thin clouds. Once you're exposed to direct su…READ FULL ARTICLE