Ozone Peak Annual Concentration

This feature layer shows the estimated peak ozone level for each 5 kilometer (km) grid cell from 2022-2024, measured in parts per billion (ppb). Higher ozone can lead to breathing problems. People most affected by higher ozone include children, older adults, people with asthma or other lung conditions, outdoor workers, and communities with fewer financial resources who may have fewer ways to avoid exposure. Concentrations are estimated by combining the National Oceanic and Atmospheric Administration (NOAA) forecast model with measured concentrations from the Washington Ambient Air Monitoring Network. The NOAA forecast model accounts for emissions, meteorology, and topography. The modeled and measured concentrations are combined to produce daily maximum 8-hour ozone concentrations. The 4th highest annual daily ozone concentration (as is defined by the EPA to be used to compare to the federal standard) is then calculated for all points in the grid. Its important to note that ozone can vary within smaller areas and might not reflect the true air quality community members experience. This layer was created by the Department of Ecology to support the Washington Tracking Network and the Environmental Health Disparities (EHD) Map. Citation Washington Tracking Network, Washington State Department of Health. Web. "Ozone Concentration". Data obtained from the Department of Ecology, 2022-2024 Data. Published September 2025. Contact us at [e-mail] if you have questions or comments.本要素图层展示了2022-2024年间每5千米（km）网格单元的臭氧峰值估算浓度，单位为十亿分之一（parts per billion，ppb）。臭氧浓度超标可引发呼吸系统健康问题。受高浓度臭氧影响最为显著的人群包括儿童、老年人、哮喘或其他肺部疾病患者、户外作业人员，以及经济资源匮乏、难以规避臭氧暴露的社区群体。该浓度数据通过融合美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration，NOAA）的预报模型与华盛顿州环境空气监测网络的实测浓度进行估算。NOAA预报模型会综合考量污染物排放、气象条件与地形特征等因素。将模拟浓度与实测浓度融合后，可得到每日最大8小时臭氧平均浓度。随后针对网格内所有点位，计算年度每日臭氧浓度的第四高值——该计算规则由美国环境保护署（Environmental Protection Agency，EPA）制定，用于与联邦空气质量标准进行比对。需特别说明的是，臭氧浓度在更小尺度的区域内存在显著差异，因此本数据可能无法准确反映社区居民实际遭遇的空气质量状况。本图层由华盛顿州生态部制作，旨在支撑华盛顿追踪网络与环境健康差异（Environmental Health Disparities，EHD）地图项目的运行。引用信息：华盛顿追踪网络、华盛顿州卫生部。网络资源《臭氧浓度》。数据源自华盛顿州生态部2022-2024年数据集，发布于2025年9月。如有任何疑问或建议，请致信[e-mail]与我们联系。