The Air District is encouraging residents to prepare for potential smoke impacts this summer to protect their health in the event of widespread unhealthy air quality.
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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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The Air District and Alameda County District Attorney Ursula Jones Dickson filed a joint civil lawsuit against Radius Recycling, formerly Schnitzer Steel Industries, for air quality violations related to the fire at the company’s facility in West Oakland on August 9-10, 2023. In addition, previous enforcement actions by the Air District and the district attorney required Radius Recycling to install new equipment that has eliminated hundreds of tons of air pollution and reduced cancer risk by 84 percent since 2022; today the Air District finalized the operating permit for this important equipment.
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The Air District is lifting an air quality advisory for the Bay Area due to wildfire smoke that was originally scheduled to last through today, Monday, July 14. Over the weekend, smoke from the Butler and Green wildfires had been moving down the Sacramento Valley and impacting air quality in portions of the Bay Area. However, as of Monday morning, the Bay Area is experiencing strong onshore winds, and smoke has remained mostly outside of the region. Air quality has been in the Good Air Quality Index category. Moderate onshore winds are expected to continue into Tuesday, keeping the smoke outside of the Bay Area. As the week progresses, these onshore winds will turn southerly in northern California, and this also is expected to keep the smoke from moving towards our region.
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2025/6/3 Air District extends air quality advisory for wildfire smoke through Wednesday
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2025/6/2 Air District issues air quality advisory for wildfire smoke for Monday and Tuesday
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2025/5/5 Air quality advisory for smoke from fire at Valero
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2025/4/30 Apply now to join the Community Workgroup for the Refinery Community Particle Fallout Sampling Program
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2025/3/25 Air District asks community members to help shape how millions in community funds are spent
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三月 21, 2025
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2025/3/5 Air District launches Charge! Program, expanding Bay Area access to electric vehicle chargers
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2025/3/3 Notice Regarding Fraudulent Bay Area Commuter Benefits Program Letters
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2025/2/13 MRC Refinery Fire Information
二月 13, 2025
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二月 1, 2025
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2025/1/28 Air District asks public not to light firecrackers and fireworks or burn wood over Lunar New Year holiday
一月 28, 2025
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2025/1/22 Air District launches new name and branding
一月 22, 2025
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。
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上次更新： 2016/11/8