High temporal-spatial pollution data in city of Hong Kong

Dataset description

Format: Raster dataset of 30 randomly sampled days in 2019 for NO2, O3, PM2.5 and PM10 in hourly resolution with grid cells of 45m * 48m over the Hong Kong domain (1000 x 1000 pixels). Units are in μg/m3 for PM10 and PM2.5 and ppb for NO2 and O3.

Size: The dataset contains 720 raster files (30 days * 24 hours) for each pollutant, which in total sums up to 2880 files. The below maps show an example of 24-hour evolution of NO2 concentrations over the study domain, generated from 24 raster files.

Data Download

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The development of the high temporal-spatial pollution data was supported by the PRAISE-HK project (http://praise.ust.hk/).


Hohenberger, T. L., Che, W.W., Fung, J. C.H., & Lau, A. K.H. (2021). A proposed population-health based metric for evaluating representativeness of air quality monitoring in cities: Using Hong Kong as a demonstration. Plos one, 16(5), e0252290. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0252290

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