Via Allen Iverson - If you mean 30°F, then no, ice is not supposed to melt just from the air temperature alone. Water freezes at 32°F, so at 30°F ice should stay solid under normal conditions.
That said, ice can still melt at 30°F because of other factors. Direct sunlight can heat the ice surface above 32°F even when the air is colder. Dark ground, concrete, or metal underneath can transfer stored heat into the ice. Salt, dirt, or other impurities lower the freezing point and cause melting. Pressure from footsteps or tires can also cause localized melting. Wind chill does not make ice melt faster, but wind can speed up evaporation and surface changes.
So the short answer is air at 30°F alone will not melt ice, but environmental conditions absolutely can
