What are the industrial cities in America?

American industrial cities include Houston, Los Angeles, San Francisco and San Diego.

San Francisco is located in the San Francisco Peninsula on the west coast of California. San Francisco, also translated as "San Francisco" and "San Francisco", is a port city on the Pacific coast of California, USA. It is a world-famous tourist attraction and the fourth largest city in California. San Francisco is close to Silicon Valley, a world-famous high-tech industrial zone. It is the most important high-tech research and development base in the world and the most important financial center in the western United States. San Francisco Peninsula is surrounded by water on three sides, which is affected by the cold current in Pacific California. San Francisco is a typical cool summer Mediterranean climate. Due to the long-term influence of sea breeze, the daily maximum temperature in summer in San Francisco is usually only about 20 degrees Celsius, and it will exceed 30 degrees Celsius only for about one week every year due to strong land breeze. September is the warmest month. At the same time, because the water temperature in the Pacific Ocean is always between 10- 15℃, it may drop below 10℃ in midsummer. Because San Francisco is close to the seaside and the Golden Gate Strait, it is often affected by fog in the middle of the night and in the morning, but there is little rain in summer, and the rainy season is 1 to April. Although it is cold in winter, there is little snowfall.