聖馬特奧縣 (San Mateo 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

半島西部海岸以涼爽、多霧的天氣為主，尤其是在夏季。夏季的日平均氣溫，沿西部海岸較為溫和，該縣東面相對溫暖。冬季，全縣的日平均氣溫溫和舒適。微風，最高風速集中在西部海岸。海拔較低處的年均降雨量大約在 20 到 25 英寸之間，聖克魯斯山 (Santa Cruz Mountain) 的年均降雨量最高可達到 36 英寸。

聖馬特奧縣 (San Mateo County) 的氣候還受到區域性灣區氣候的影響。

聖馬特奧縣的空氣品質

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。

在聖馬特奧縣，臭氧幾乎從沒有超過健康標準，PM2.5 通常每年只有一天會超過國家標準。太平洋的新鮮海洋空氣經常飄過海岸邊的丘陵，到達聖馬特奧縣。在冬季，PM2.5 會從灣區的其他地方飄到聖馬特奧縣，加上木材焚燒的煙霧，可能會導致 PM2.5 濃度升高，但很少能超過健康標準。

聖馬特奧縣 (San Mateo County)

關於空氣局

氣候

聖馬特奧縣的空氣品質

資源團隊

Friday

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關於空氣局

聖馬特奧縣 (San Mateo County)

關於空氣局

氣候

聖馬特奧縣的空氣品質

資源團隊

Friday