High pressure over the Great Basin is bringing unseasonable heat to Southern California.
If you do want to go outside and get moving, the best time is early in the morning or after sunset, when ozone levels will be at their lowest.
No, it's not just you. This heat wave really is making you feel crappy. Experts say extreme heat saps energy, shortens breath, fogs thinking, and can stop you short with cramps.
Libraries like Pasadena's expect a spike in the number of homeless visiting their facilities during the heat wave this weekend.