There’s an unmistakable smell in the air. One that creeps into the Coachella Valley during the hot, sticky days of summer.

The sulfuric odor typically shows up when the mercury and humidity are high, and levels of hydrogen sulfide spike in the Salton Sea.

A South Coast Air Quality Management District spokeswoman on Wednesday said the agency hadn’t received any reports of smelly air, and in fact, air quality across Southern California — including Riverside County — was “moderate.” The district, located in Diamond Bar, issues alerts when air pollutants are at levels that could be harmful to humans.