Why is your swamp cooler not cooling the air?

Your swamp cooler may not be cooling the air effectively due to several factors. First, check that the water supply is adequate and that the pads are properly saturated; dry or dirty pads can hinder performance. Additionally, ensure that the cooler is properly vented to allow hot air to escape, and check for any mechanical issues, such as a malfunctioning fan or motor. Lastly, high humidity levels can also reduce the effectiveness of swamp coolers, as they work best in dry climates.