Clean weather is the perfect antonym for dirty weather. It refers to the climatic conditions that are favourable, pleasant and comfortable, and do not pose any threat to life, property or the environment. Clean weather can be described as sunny, clear, bright, warm, dry and calm, where the skies are blue, and the air is fresh and crisp. It is the kind of weather that makes people want to go out, enjoy the outdoors and engage in recreational activities. Clean weather is something that everyone looks forward to after a spell of dirty weather, which can be a period of heavy rains, stormy winds, and low visibility, among other things.