ATMO pollen index - History

Historization since 6 January 2026 of data concerning the quality of the pollen-related ace. The pollen index is a synthetic daily indicator calculated by the approved air quality monitoring associations (AASQA) that describes pollen events at municipal level. The pollen index takes into account the concentrations of six species/taxons: alder, birch, olive, sagebrush, grasses and ambrosia. Each level of concentration reached by each taxon is assigned a sub-index (very low, low, moderate, high, very high, extremely high, unavailable). The pollen index is the highest sub-index. The pollen index is updated daily for the current day, the next day and the day after tomorrow. Data source: Atmo France and the approved air quality monitoring associations Additional information: [https://www.atmo-france.org/sites/federation/files/medias/documents/2025-04/Presentation _index_pollen_version_2_April_2025.pdf](https://www.atmo-france.org/sites/federation/files/medias/documents/2025-04/Presentation _index_pollen _version _2_April_2025.pdf)自2026年1月6日起，对涉及花粉相关领域质量的数据开展历史归档工作。 花粉指数是由认可空气质量监测协会（AASQA）计算得出的综合性每日指标，用于描述市级层面的花粉污染事件。 该花粉指数纳入了6类物种/分类单元的浓度数据：桤木、桦树、橄榄、蒿属植物、禾本科植物以及豚草。 每类分类单元的浓度水平对应一个子指数等级（极低、低、中等、高、极高、极端高、无数据），花粉指数取所有子指数中的最高值。 该花粉指数每日更新，覆盖当日、次日及后天的相关数据。 数据来源：法国大气监测机构（Atmo France）与认可空气质量监测协会。 补充信息：[https://www.atmo-france.org/sites/federation/files/medias/documents/2025-04/Presentation _index_pollen_version_2_April_2025.pdf]