Which factor is crucial for the performance of asphalt according to weather conditions?

The performance of asphalt is significantly influenced by the temperature during application. When asphalt is laid down at the correct temperature, it achieves optimal compaction, bonding, and overall durability. If the temperature is too low, the asphalt may not flow properly, leading to inadequate compaction and potential premature failure. Conversely, if the temperature is too high, the asphalt can become too soft, losing its structural integrity. Therefore, maintaining the appropriate application temperature is critical for ensuring that the asphalt performs well under varying weather conditions and can withstand the stresses of traffic and environmental factors.

While factors like humidity, wind conditions, and cloud coverage can affect the overall paving process, they do not have the same direct impact on the physical properties of the asphalt mix during application as temperature does.