阿拉米達縣 (Alameda County)

Air District urges residents to skip the sparklers this Fourth of July
七月 02, 2025

The Air District urges residents to celebrate responsibly this Fourth of July by avoiding personal fireworks, which can elevate air pollution and increase wildfire danger. Fireworks release smoke and fine particulate matter pollution, contributing to temporary spikes in unhealthy air quality.

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Air District extends air quality advisory for wildfire smoke through Monday
六月 23, 2025

The Air District is extending an air quality advisory due to wildfire smoke from Canada and Alaska in the Bay Area through Monday, June 23. Smoke from various wildfires in western Canada and in Alaska is expected to continue to impact air quality in the Bay Area on Monday. Conditions can change rapidly and the amount and location of smoke at ground level is hard to predict. The public can check for real-time smoke pollution levels in their local area with the U.S. EPA’s Fire and Smoke Map. Smoky, hazy skies may be visible, the smell of smoke is possible and air quality may become unhealthy on Monday.

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Air District issues air quality advisory for wildfire smoke for Sunday
六月 22, 2025

The Air District is issuing an air quality advisory due to wildfire smoke from Canada and Alaska in the Bay Area for Sunday, June 22. Smoke from various wildfires in western Canada and in Alaska is expected to impact air quality in parts of the Bay Area on Sunday. Conditions can change rapidly and the amount and location of smoke at ground level is hard to predict. The public can check for real-time smoke pollution levels in their local area with the U.S. EPA’s Fire and Smoke Map. Smoky, hazy skies may be visible, the smell of smoke is possible and air quality may become unhealthy on Sunday.

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六月 18, 2025

Air District issues air quality advisory for smoke from Somersville brush fire for Wednesday evening
六月 12, 2025

Air District increases Vehicle Buy Back Program incentive and expands eligibility effective July 1
六月 10, 2025

Air District and Chevron reach settlement with enhanced requirements for air monitoring and transparency
六月 04, 2025

Air District allocates $1.3 million to improve air quality in West Contra Costa County schools
六月 04, 2025

Air District extends air quality advisory for wildfire smoke through Thursday

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。

阿拉米達縣 (Alameda County)

關於空氣局

氣候

阿拉米達縣的空氣品質

資源團隊

Thursday

Friday

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關於空氣局

阿拉米達縣 (Alameda County)

關於空氣局

氣候

阿拉米達縣的空氣品質

資源團隊

Thursday

Friday