Town in Guanajuato, Mexico

Air quality in San Miguel de Allende

Updated October 2026Sources

12PM2.5 µg/m³, yearly

Moderate

The annual average PM2.5 in San Miguel de Allende was 12 µg/m³ in 2018, about 2.4 times the WHO guideline of 5 µg/m³.

Key facts

PM2.5: 12 µg/m³ yearly average (2018). Measured at San miguel de allende.

Air quality across Mexico

Place	PM2.5	Level
Guanajuato	11 µg/m³	Moderate
San Miguel de Allende	12 µg/m³	Moderate
Querétaro	13 µg/m³	Moderate
Mérida	14.6 µg/m³	Moderate
Cuernavaca	15.3 µg/m³	Polluted
Morelia	16.4 µg/m³	Polluted
Puebla	19 µg/m³	Polluted
Tijuana	20 µg/m³	Polluted
Mexico City	22 µg/m³	Polluted
Oaxaca	22 µg/m³	Polluted
Monterrey	23 µg/m³	Polluted
Guadalajara	25 µg/m³	Polluted

Quick answers

Is the air in San Miguel de Allende bad?

Moderate: 12 µg/m³ of PM2.5 on average, 2.4× the WHO guideline.

How does San Miguel de Allende compare with the rest of Mexico?

People in Mexico breathe 17 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 12 µg/m³ measured here.

More about San Miguel de Allende

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Sources

Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.