Air Quality API 常見問題
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你可以依據偏好儲存及分類內容。
API 是否有使用頻率限制？
Air Quality API 的預設頻率限制為每分鐘 6,000 次查詢。
什麼是空氣品質指數 (AQI)？
空氣品質指數 (AQI) 是政府機關和其他供應商用來向大眾說明空氣汙染程度或預測汙染程度的指標。許多空氣品質指數都與健康影響有關，部分指數還會針對每個空氣品質指數類別提供健康建議。
全球有許多不同的空氣品質指數，每個指數可能使用不同的汙染物、汙染物濃度門檻、平均時間週期計算，並以不同的尺度、類別和顏色表示。
空氣品質 API 包含超過 70 種空氣品質指數，涵蓋超過 100 個國家/地區。
什麼是污染物？
空氣汙染物是空氣中的微粒和氣體，可能對人體健康有害，尤其是在濃度偏高時。Air Quality API 提供最常見污染物的相關資訊，包括濃度、排放來源和影響。
計算結果是否準確？
計算空氣品質指數的基礎空氣品質模型是多層模型，會使用各種資訊和資料做為輸入內容。我們會比較模型輸出內容與政府監測站的資料，驗證及監控模型的整體準確度 (這些監測站代表所在位置的空氣品質基準真相)。這項作業會使用「留一法」執行持續交叉驗證程序：從模型計算中排除某個感應器的輸入資料，然後將結果與實際測站讀數進行比較，瞭解兩者是否相符。
如要進一步瞭解 Google 如何計算空氣品質指數，請參閱「Google 上的空氣品質」。
空氣品質資料的更新頻率為何？
空氣品質熱視圖方塊會與目前的狀況資料同步，每小時更新一次。更新內容通常會在整點過後不久發布。
除非另有註明，否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權，程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
上次更新時間：2025-08-31 (世界標準時間)。
[null,null,["上次更新時間：2025-08-31 (世界標準時間)。"],[[["\u003cp\u003eThe Air Quality API has a default rate limit of 6,000 queries per minute.\u003c/p\u003e\n"],["\u003cp\u003eAn Air Quality Index (AQI) is a scale used to communicate air pollution levels and potential health effects, and the API supports over 70 AQIs in over 100 countries.\u003c/p\u003e\n"],["\u003cp\u003eThe API provides data on various air pollutants, including their concentration, sources, and effects.\u003c/p\u003e\n"],["\u003cp\u003eAir quality calculations are based on a multi-layered model and are validated against government monitoring stations for accuracy.\u003c/p\u003e\n"]]],[],null,["Is there a rate limit on the API?\n\nFor the Air Quality API, there is a default rate limit of 6,000\nqueries per minute.\n\nWhat is an Air Quality Index (AQI)?\n\nAn air quality index (AQI) is the scale by which government agencies and other\nproviders communicate to the public how polluted the air is or how polluted it\nis forecasted to be. Many AQIs are related to health effects and some have\nhealth recommendations for each AQI category.\n\nThere are many different AQIs globally, each may be calculated using different\npollutants, different pollutant concentration thresholds, different averaging\ntime periods and expressed on different scales, categories and colors.\n\nThe Air Quality API includes over 70 [air quality\nindexes](/maps/documentation/air-quality/laqis#supported_aqis) in over 100\n[countries](/maps/documentation/air-quality/laqis#supported_countries_and_their_relevant_aqis).\n\nWhat are pollutants?\n\nAir pollutants are particles and gasses in the air that can be harmful to\npeople's health, especially at elevated concentrations. The Air Quality API\nprovides information about the most common\n[pollutants](/maps/documentation/air-quality/pollutants#reported_pollutants),\ntheir concentration, emission sources and effects.\n\nAre the calculations accurate?\n\nThe underlying air quality model calculating the AQIs is a multi-layered model\nthat uses various types of information and data as input. The overall accuracy\nof the model is validated and monitored by comparing the model outputs to\ngovernment monitoring stations (these stations represent the ground truth\nregarding air quality at their precise location). This is performed by running a\ncontinuous cross-validation process using the Leave One Out Method: eliminating\nthe input data from one sensor from the model calculations and then comparing\nthe result to the actual station's reading to see how closely they match.\n\nFor more information about how Google calculates AQI, see [Air quality on\nGoogle](https://support.google.com/maps/answer/11270845).\n\nHow often is air quality data updated?\n\nAir Quality heatmap tiles are refreshed every hour in sync with current\nconditions data. Updates are typically published shortly after the hour."]]
