SmogRank / World / Mexico / Tamaulipas / 2026

Most polluted cities in Tamaulipas, Mexico, 2026

1 city in Tamaulipas, Mexico ranked by their average PM2.5 so far (278 of 365 days); 1 above the WHO annual guideline (5.0 µg/m³). The only one: Heroica Matamoros at 11.3 µg/m³, #776 of 2,745 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Heroica Matamoros
    552.3×
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

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SmogRank, most polluted cities in Tamaulipas, Mexico, PM2.5, 2026 (so far), smogrank.com/mx/region/tamaulipas/history/2026 (accessed 6 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.