The early summer sunshine like mid-July is the weather in Chicago - one of the coolest cities in the US. As early as mid-May, Chicago broke a 63-year record when temperatures at OHare Airport reached 34.4 degrees Celsius on May 15. WGN-TV meteorologist Bill Snyder warned: "It will be as hot as mid-July even though it is early summer."
Meanwhile, Houston is not far behind with 3 consecutive days of breaking the record for the highest temperature. Even at night was not cool, when it recorded 5 consecutive mornings breaking the record for the highest minimum temperature.
According to the US Climate Prediction Center (CPC), the entire US is expected to have a hotter-than-average summer. In the 20 hottest summers in U.S. history, 15 have occurred since 2000, more than half of which were after 2010.
Climate Central analyzed data from 242 US cities, discovering that 97% had warmed up to an average of 1.44 degrees Celsius since 1970. The number of summer days exceeding the average temperature of 1991-2020 also increased rapidly.
In Spain, a "monsoon" heat wave, described as the " earliest heat on record," is making the whole country struggle to cope. From Madrid to Barcelona, temperatures have exceeded 40 degrees Celsius - levels typically only seen in July and August. The Spanish Meteorological Center warned that this was an early summer attack.

In Southeast Asia, the Philippines warned more than 26 areas to reach the dangerous temperature threshold of 42-44 degrees Celsius last weekend. At Davao City and tarlac, the felt temperature peaked at 44 degrees Celsius on May 31.
Singapore, where the average humidity is up to 82%, is facing a "double-tolerance" complex: hot and moist air makes it impossible for the body to sweat effectively, increasing the risk of heatstroke, especially for the elderly and outdoor workers.
The Vietnam National Center for Hydro-Meteorological Forecasting said that on June 1, severe heat will occur widely in the Northern Delta, the mountainous areas west of Thanh Hoa - Nghe An and Hoa Binh; some places will have particularly severe heat. The temperature recorded at 1pm was generally 35-38 degrees Celsius, especially Hanoi was above 39.4 degrees Celsius.
On June 2, severe heat is forecast to continue in the North Central region, the Northern Delta and Hoa Binh; some places will be particularly hot, with the highest temperature commonly 37-39 degrees Celsius, some places above 39 degrees Celsius.
Other places in the North, Central and South Central regions will have hot weather, some places will have severe heat, the temperature will be 35-37 degrees Celsius, some places will be over 38 degrees Celsius.
On June 3, the hot weather will continue in the Central and South Central regions, with some places experiencing severe heat (35-37 degrees Celsius, some places above 38 degrees Celsius). The North Central region will have localized heat waves, the North will have ended heat waves.
In the weather forecast released on May 28, the World Meteorological Organization (WMO) and the UK Met Office warned of a global heat storm about to sweep the planet.
According to the forecast, there is an 80% chance that the world will set a new temperature record within the next 5 years, and there is a 70% chance that the average global temperature at this stage will surpass 1.5 degrees Celsius compared to the pre-industrial period.