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The period covers pre-lockdown, lockdown, and post-lockdown phases of the COVID-19 pandemic, providing insights into pollutant behaviour across different levels of human activity. Findings show notable spatial variability in pollutant levels, with Santiago de Chile repeatedly presenting the highest concentrations of NO\u2082 and SO\u2082, linked to urban development and local weather patterns, whereas Quito showed the lowest levels. The lockdowns typically resulted in decreased NO\u2082 concentrations, yet their effects on SO\u2082 and O\u2083 levels were inconsistent, highlighting the complexity of pollutant interactions. The research confirms that satellite data serves as an affordable addition to conventional monitoring, especially in areas with limited resources. These results emphasize the necessity for customized, city-oriented strategies to reduce urban air pollution and safeguard public health.<\/jats:p>","DOI":"10.1007\/s11869-025-01738-z","type":"journal-article","created":{"date-parts":[[2025,5,17]],"date-time":"2025-05-17T03:08:18Z","timestamp":1747451298000},"page":"1919-1929","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["COVID-19 pandemic impacted differently air quality in Latin American cities"],"prefix":"10.1007","volume":"18","author":[{"given":"Oliva","family":"Atiaga","sequence":"first","affiliation":[]},{"given":"Fernando","family":"P\u00e1ez","sequence":"additional","affiliation":[]},{"given":"Wilson","family":"J\u00e1come","sequence":"additional","affiliation":[]},{"given":"Rafael","family":"Castro","sequence":"additional","affiliation":[]},{"given":"Edison","family":"Collaguazo","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5606-970X","authenticated-orcid":false,"given":"Lu\u00eds Miguel","family":"Nunes","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2025,5,17]]},"reference":[{"key":"1738_CR1","doi-asserted-by":"publisher","first-page":"101061","DOI":"10.1016\/j.jth.2021.101061","volume":"21","author":"N Albayati","year":"2021","unstructured":"Albayati N, Waisi B, Al-Furaiji M et al (2021) Effect of COVID-19 on air quality and pollution in different countries. 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