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June 13, 2026City and Environment InteractionsOpen Access

Persistent air pollution regimes and regulatory exceedances of PM10, PM2.5, and O3 in the Monterrey Metropolitan Area, Mexico

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Authors

KHKarina Hernández-RomeroIHIlse María Hernández-RomeroAMAlberto Mendoza

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Overview

Multiyear assessment reveals persistent air quality issues in Monterrey, suggesting updates to regulatory frameworks.

Key Points

  • The aim is to analyze air pollution dynamics and regulatory exceedances of PM10, PM2.5, and O3 in Monterrey.
  • Conducted spatiotemporal assessment of air quality from 2019–2023 across five municipalities.
  • Analyzed high-resolution data using statistical methods, including run-length analysis and Kruskal–Wallis test.
  • Assessed the regulatory compliance of air pollutants against established standards.
  • Annual mean PM10 concentrations reached up to 74 μg/m³, with exceedances persisting beyond regulatory limits.
  • Over two-thirds of 2023 exhibited PM10 exceedance in Apodaca, indicating severe regulatory non-compliance.
  • PM2.5 and O3 showed lower exceedance rates, with no breaches of O3 standards found in the assessed period.

Cite This Study

Hernández-Romero et al. (2026) studied this question.

synapsesocial.com/papers/6a2cf34dfaef96ed7f055d4ehttps://doi.org/10.1016/j.cacint.2026.100410
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