Background Exposure to air pollution can affect the health of individuals with respiratory disease, but may also impede the health and performance of athletes. This is potentially relevant for people travelling to and competing in the Olympic and Paralympic Games (OPG) in Paris. We describe anticipated air quality in Paris based on historical monitoring data and describe the impact of the process on the development of monitoring strategies for future international sporting events. Methods Air pollutant data for July to September 2020–2023 and pollen data for 2015–2022 were provided by Airparif (particulate matter (PM2.5), nitrogen dioxide (NO2) and ozone (O3)) and RNSA stations in the Paris region. Airparif’s street-level numerical modelling provided spatial data for the OPG venues. Results The maximum daily mean PM2.5 was 11±6 µg/m3 at traffic stations, below the WHO recommended daily air quality threshold (AQT). Daily NO2 concentrations ranged from 5±3 µg/m3 in rural areas to 17±14 µgm3 in urban areas. Near traffic stations, this rose to 40±24 µg/m3 exceeding the WHO AQT. Both peaked around 06:00 and 20:00 UTC (coordinated universal time). The ambient O3 level exceeded the AQT on 20 days per month and peaked at 14:00 UTC. The main allergenic taxa from June to September was Poaceae (ie, grass pollen variety). Conclusion Air pollutant levels are expected to be within accepted air quality thresholds at the Paris OPG. However, O3 concentrations may be significantly raised in very hot and clear conditions and grass pollen levels will be high, prompting a need to consider and manage this risk in susceptible individuals. Data are available upon reasonable request. Data used in the manuscript are freely available as mentioned in the manuscript with the links. To have more information on modelling, it is upon request.

中文翻译：

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巴黎2024年奥运会和残奥会空气质量监测：重点关注空气污染物和花粉


背景 接触空气污染会影响患有呼吸道疾病的人的健康，但也可能会损害运动员的健康和表现。这对于前往巴黎参加奥运会和残奥会 (OPG) 并参加比赛的人们来说可能具有相关性。我们根据历史监测数据描述了巴黎的预期空气质量，并描述了该过程对制定未来国际体育赛事监测策略的影响。方法 2020-2023年7月至9月的空气污染物数据和2015-2022年的花粉数据由巴黎地区的Airparif（颗粒物（PM2.5）、二氧化氮（NO2）和臭氧（O3）站）和RNSA站提供。 Airparif 的街道级数值模型为 OPG 场馆提供了空间数据。结果 交通站点PM2.5日均值最高值为11±6 µg/m3，低于世界卫生组织推荐的每日空气质量阈值（AQT）。每日二氧化氮浓度范围从农村地区的 5±3 µg/m3 到城市地区的 17±14 µgm3。在交通站附近，这一浓度升至 40±24 µg/m3，超过了 WHO AQT。两者均在 UTC（协调世界时）06:00 和 20:00 左右达到峰值。环境 O3 水平每月有 20 天超过 AQT，并在 UTC 时间 14:00 达到峰值。六月至九月的主要过敏类群是禾本科（即草花粉品种）。结论 空气污染物水平预计将在巴黎 OPG 可接受的空气质量阈值之内。然而，在非常炎热和晴朗的条件下，O3 浓度可能会显着升高，草花粉水平也会很高，因此需要考虑和管理易感人群的这种风险。数据可根据合理要求提供。手稿中使用的数据可以免费获得，如手稿中提到的链接。 如需有关建模的更多信息，请垂询。