Temperature inversions typically start before what time of day?

Temperature inversions typically start before sunset because during the late afternoon and evening, the Earth's surface cools rapidly, especially as the sun goes down. As the temperature of the ground drops, it cools the air just above it while the air higher up remains warmer. This creates a layer of cool air trapped beneath warmer air, leading to a temperature inversion.

These inversions can significantly impact aerial application of pesticides and fertilizers, as they can influence how sprays disperse in the atmosphere. Understanding the timing of these inversions is crucial for applicators in order to minimize drift and ensure effective application. Conversely, during the day, particularly after noon, solar radiation heats the surface, typically leading to a more stable mixing of air temperatures and reducing the likelihood of an inversion occurring.