The Air District is issuing the winter season’s first Spare the Air Alerts for Wednesday, November 26, and Thanksgiving Day, which bans burning wood, manufactured fire logs or any other solid fuel, both indoors and outdoors.
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舊金山縣
瞭解舊金山縣，包括它的氣候、潛在空氣污染問題及目前的空氣品質。您還可以查看舊金山縣即將發生的空氣局事件，閱讀瞭解當地為改善空氣品質所做的努力。
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Public Comment Deadline – Draft Local Community Benefits Fund Guidelines (Nov 25 at 5 PM)十一月 19, 2025
The public comment period for the Draft Guidelines for the Local Community Benefits Fund for Benicia, Richmond, and surrounding areas closes on Tuesday, November 25, at 5:00 PM. The Draft Guidelines describe the Local Community Benefits Fund, which will reinvest penalty funds back into communities impacted by air quality violations, supporting local projects that improve public health, reduce pollution, and promote a just transition.
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The Air District is announcing the launch of its Commercial Electric Lawn and Garden Equipment Exchange Program, a pilot grant program designed to reduce air pollution by replacing gasoline and diesel-powered landscaping equipment with cleaner, zero-emission electric alternatives.
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氣候
因為舊金山的大部分地勢低於 200 英尺，海洋氣流流過城市的大部分地區，形成涼爽多風的氣候。而該縣東南部則較為溫暖，陽光較為充足，霧天較少。冬季，每日平均氣溫夜間適中，白天溫和；夏季，整個季節的氣溫都較為溫和。最高風速都發生在西部海岸，縣內一般為輕風。每年的降雨量平均在 20 英寸左右，最高降雨量發生在西部海岸。
舊金山縣 (San Francisco County) 的氣候還受到區域性灣區氣候的影響。
舊金山縣的空氣品質
臭氧和細顆粒物污染（即 PM2.5）是影響舊金山灣區的主要區域性空氣污染物。臭氧問題主要發生在夏季，細顆粒物污染主要發生在冬季。
在舊金山，臭氧幾乎從沒有超過健康標準，PM2.5 通常每年只有一兩次超過國家標準。舊金山三面環水，使這裡的氣溫變化較小，因此冬季低溫很少達到冰點，夏季高溫也在形成臭氧及達到不健康標準的水平以下。
資源團隊
舊金山縣的愛惜空氣資源團隊在當地社區倡導降低空氣污染的方法。
Spare the Air Status
上次更新： 2016/11/8