Southern California is anticipating a cooling trend that will bring light rain to the region, providing a temporary break from the usual warm and sunny conditions. Forecasters predict that this shift will occur on Tuesday, with rainfall expected to be minimal, accumulating less than 0.10 inches. While this amount of rain may not significantly alleviate drought conditions, it will contribute to a cooling effect and help clear the air by reducing dust and pollen levels, benefiting those with allergies.