During what weather condition is it generally unsafe to conduct aerial pesticide applications?

High winds are generally considered unsafe for aerial pesticide applications due to the potential for drift and loss of control of the aircraft. Wind can affect the accuracy of the pesticide application, making it challenging to maintain the intended application rate and pattern. Additionally, strong winds could cause the aircraft to move unpredictably, which raises safety concerns for both the pilot and the surrounding area.

In contrast, while overcast skies, clear and warm conditions, or light rain might not be ideal for every aerial application, they do not inherently pose the same level of risk associated with high winds. Low winds can help ensure that the pesticides are effectively deposited on the target area without significant drift, allowing for a more controlled application process.