San Francisco's climate is evolving due to climate change, with summer temperatures rising as a result. Since 1970, average temperatures in the city have increased by 1.1 degrees, and even more significantly at the airport. While this increase may seem small, experts emphasize its potential impact on local weather patterns, particularly noting that San Francisco, unlike other Bay Area regions, is vulnerable to extreme heat events. There's concern that warmer nights could lead to more discomfort for residents unaccustomed to high temperatures, especially in homes without air conditioning.
The big picture is that all signs do point to warming, with various levels of change, and a definite unified warming trend across the city.
Globally, we've seen about a 1- or 2-degree temperature change for the whole planet, and that is a big deal for urban areas like San Francisco.
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