The Air District and the California Air Resources Board are announcing a nearly $82 million penalty in a joint case to address significant air pollution violations by Valero Refining Co. at its Benicia refinery. This penalty is the largest ever assessed in the Air District’s history.
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A Healthy Breathing Environment For Every Bay Area Resident
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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The Air District is issuing an air quality advisory due to smoke for Friday, October 25 and Saturday, October 26. Smoke from prescribed fires near Pescadero may impact air quality along the Peninsula – south of San Francisco and north of San Jose. Conditions can change rapidly and the amount and location of smoke at ground level is hard to predict.
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The Air District is issuing an air quality advisory due to wildfire smoke from fires around the Bay Area for Friday, October 18. Smoke from wildfires including the Keller Fire in the East Bay may impact air quality in parts of the Bay Area Friday. Conditions can change rapidly and the amount and location of smoke at ground level is hard to predict.
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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。
Spare the Air Status
上次更新： 2016/11/8