The Air District will host an in-person conversation with Air District Board Chair Davina Hurt on Saturday, December 7, 2024, from 12 noon – 1 PM at the Greenhouse Community Room in the San Lorenzo Public Library. The conversation will focus on community questions and concerns regarding air quality issues and climate change.
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阿拉米達縣 (Alameda County)
瞭解阿拉米達縣，包括它的氣候、潛在空氣污染問題及目前的空氣品質。您還可以查看阿拉米達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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Air District to represent Bay Area at COP29十一月 12, 2024
The Air District is sending representatives to attend the United Nations Climate Change Conference, or COP29, in Baku, Azerbaijan from November 11 through November 22. Air District Board of Directors Chair Davina Hurt and Executive Officer Dr. Philip Fine will hold a virtual press conference on Tuesday, November 19 at 10 AM. Bay Area residents are invited to join the discussion, ask questions and share their concerns by connecting with the Air District on Facebook during the livestream press conference.
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The Air District has released a woodsmoke White Paper for public comment, which provides extensive information on wood burning in the Bay Area, the current state of the regulatory landscape for wood-burning devices, and a discussion of potential recommendations to further minimize woodsmoke emissions and exposures.
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氣候
沿著該縣的西部海岸，氣溫受到海灣的調節。天氣寒冷時，海灣能夠充當熱源，天氣溫暖時，海灣則能使空氣降溫。一般而言，距離海岸越遠，陽光越充沛，但夏季多雲天氣較為常見。夏季平均氣溫夜間適中，白天溫和。冬季夜間涼爽，白天氣溫適中。最高氣溫常見於內陸地區。該縣各地的風速不一。西部海岸有最強勁的陣風，主導風常以西風為主，有海灣微風。每年的總降雨量平均在 14 到 23 英寸，該縣北端和奧克蘭伯克利山山頂的降雨總量最高。
阿拉米達縣 (Alameda County) 的氣候還受到區域性灣區氣候的影響。
阿拉米達縣的空氣品質
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。
在阿拉米達縣東灣山西部，臭氧很少超過健康標準，因為該地區毗鄰舊金山灣，氣溫維持在臭氧形成的基本水平以下。 冬季夜間涼爽且伴有輕風，木材煙霧以及從利弗莫爾山谷向東傳送的偶發性空氣污染，使 PM2.5 問題在該地區更為顯著。
阿拉米達縣東部是灣區臭氧水平最高的地區，夏季午後氣溫經常接近三位數，致使臭氧水平超過健康標準。冬季，PM2.5 從中央谷地通過阿爾塔蒙特山口 (Altamont Pass) 向西傳送，加上木材煙霧水平，超過了健康標準。
資源團隊
阿拉米達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式。
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上次更新： 2016/11/8