The phrase "high temperatures" refers to a situation where the temperature is elevated or raised above its normal level. This could be due to various reasons such as weather conditions, industrial processes, or natural disasters like volcanic eruptions. High temperatures can have an impact on people's health and safety, causing heat exhaustion, dehydration, or even more severe consequences if not managed properly. In addition, high temperatures can also affect the environment, leading to droughts, wildfires, or melting of polar ice caps due to global warming.