Air Quality History

This dataset contains quality assured and DOEE-certified air quality data collected from the District’s five air monitoring network sites. The dataset covers a three-year period and includes hourly concentration data points from the Environmental Protection Agency (EPA)’s criteria pollutants, air toxics, and speciation. It also includes hourly surface meteorology data points. The District of Columbia is providing this data for a rolling 3-year period when data become available from the EPA. For complete history of data, visit the EPA Air Quality System API at aqs.epa.gov/aqsweb/documents/data_api.html本数据集收录经质量管控并获华盛顿特区环境与能源部（DOEE）认证的空气质量数据，数据采集自该特区下辖的5个空气监测网络站点。数据集覆盖三年观测时段，包含美国环境保护署（EPA）规定的标准污染物、空气有毒物质及组分分型的小时浓度观测数据点，同时收录地表气象要素的小时观测数据。华盛顿哥伦比亚特区将在美国环境保护署更新数据后，提供滚动更新的三年期数据集。如需获取完整数据历史记录，请访问美国环境保护署空气质量系统API接口，地址为：aqs.epa.gov/aqsweb/documents/data_api.html