FrostGuard

FrostGuard tells you whether there'll be frost tonight, and how cold the things you care about will actually get. Most weather apps give you the air temperature. But on a clear, still night your windscreen, the road and your lawn can be several degrees colder than the air. FrostGuard works out how cold each surface will get overnight, using the temperature, humidity, wind and cloud cover, and gives you a clear verdict: Low, Moderate or High risk. CHOOSE YOUR MODE
 • Driving, Walking & Cycling: icy roads, paths and bike routes, using the same +1 °C threshold UK highways teams use to decide when to grit.
 • Windscreen / Emergency Response: know when to cover your windscreen so the car is clear and ready to go.
 • Gardening: ground frost on grass and tender plants, plus a warning when the soil itself is likely to freeze.