Women' 5k final scheduled for this Monday (6/21) @ 5:40pm PDT . . . when the forecasted temperature is 90 deg F.
Possibly reschedule the race to 9am when the temp will be 70 deg or 9pm when the temp will be 76 deg? (Yes, outside the tv window but Peacock could stream it live and we're already seeing delayed rebroadasts on NBC.)
USATF has done this in the past, I recall, moving the 5k to the morning once when the race was at Drake.
It will be warm as well at the Olympics; however, the women's 5k final is the last event on the schedule for August 2nd at approx 10pm Tokyo time so well after sunset in cooler weather.