BEIJING - China's national observatory renewed yellow alerts on Tuesday, warning of high temperatures and rainstorms in several regions of the country.

During daytime on Tuesday, parts of regions between the Yellow River and the Huaihe River, regions between the Yangtze River and the Huaihe River, the Jianghan Plain, areas south of the Yangtze River, southern China, Chongqing, Guizhou and Xinjiang will experience scorching weather with temperatures reaching over 35 C, according to the National Meteorological Center (NMC).

High temperatures ranging from 37 to 39 degrees C are expected in some of the aforementioned regions -- with certain local areas even set to experience temperatures above 40 C, the NMC said.

The center recommended that people take protective measures to prevent excessive sun exposure.

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Also on Tuesday, the NMC renewed a yellow alert for rainstorms. From Tuesday morning to Wednesday morning, heavy rains and rainstorms are expected to hit parts of Zhejiang, Fujian, Sichuan, Chongqing, Guizhou, Inner Mongolia, Shaanxi, Shanxi and Yunnan.

China has a four-tier weather warning system, with red representing the most severe warning, followed by orange, yellow and blue.