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"Datos del Municipio" [Municipality Date] (in Spanish). Alcaldía de la Ciudad de San Salvador. 2018. Archived from the original on 5 January 2019. Retrieved 10 January 2024.
"Ilopango Normals 1991–2020". World Meteorological Organization Climatological Standard Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 30 September 2023. Retrieved 30 September 2023.
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