Air quality by country

Air quality in Mexico today

Updated Sun, 25 Oct 2026 19:37:14 GMT

Good: average US AQI 46 across 39 cities Worst now: Iztapalapa (64); cleanest: San Nicolás de los Garza (30).

Live US AQI, PM2.5 and ozone for cities across Mexico, ranked from most polluted to cleanest.

Average US AQI: 46 Good
Most polluted now: Iztapalapa AQI 64
Cleanest now: San Nicolás de los Garza AQI 30
Cities above 100: 0 unhealthy for sensitive groups or worse

Air quality in Mexico today

Right now the modelled air quality in Mexico averages a US AQI of 46 (Good) across the 39 cities we track. By category: 28 Good, 11 Moderate (of 39).

That is 32 points better than the worldwide average of 78 across 1,102 cities.

Iztapalapa has the worst air at 64 with PM2.5 at 4.9 µg/m³, while San Nicolás de los Garza is cleanest at 30. No tracked city is above 100, the level where sensitive groups are advised to cut back outdoors.

Mexico cities by AQI (most polluted first)

City	Region	US AQI	Category	PM2.5 µg/m³	Ozone µg/m³
Iztapalapa	Mexico City	64	Moderate	4.9	78
Xochimilco	Mexico City	64	Moderate	4.9	78
Xico	México	64	Moderate	4.9	78
Ixtapaluca	México	64	Moderate	4.9	78
Tláhuac	Mexico City	64	Moderate	4.9	78
Chalco de Díaz Covarrubias	México	64	Moderate	4.9	78
Tijuana	Baja California	57	Moderate	13.5	101
Zapopan	Jalisco	56	Moderate	5.3	91
Guadalajara	Jalisco	56	Moderate	5.3	91
Tlaquepaque	Jalisco	56	Moderate	5.3	91
Mérida	Yucatán	51	Moderate	9.3	100
Mexico City	Mexico City	45	Good	4	75
Ecatepec de Morelos	México	45	Good	4	75
Gustavo Adolfo Madero	Mexico City	45	Good	4	75
Ciudad Nezahualcoyotl	México	45	Good	4	75
Naucalpan de Juárez	México	45	Good	4	75
Tlalnepantla	México	45	Good	4	75
Cuauhtémoc	Mexico City	45	Good	4	75
Ciudad López Mateos	México	45	Good	4	75
Azcapotzalco	Mexico City	45	Good	4	75
Iztacalco	Mexico City	45	Good	4	75
Miguel Hidalgo	Mexico City	45	Good	4	75
Benito Juarez	Mexico City	45	Good	4	75
Buenavista	México	45	Good	4	75
Chicoloapan de Juárez	México	45	Good	4	75
Texcoco de Mora	México	45	Good	4	75
Tepexpan	México	45	Good	4	75
Chihuahua	Chihuahua	41	Good	6.5	89
Santiago de Querétaro	Querétaro	40	Good	2.4	68
Mexicali	Baja California	37	Good	2.8	90
León de los Aldama	Guanajuato	34	Good	0.8	79
Ciudad Juárez	Chihuahua	34	Good	6.2	86
Puebla	Puebla	31	Good	2	89
Cholula	Puebla	31	Good	2	89
Monterrey	Nuevo León	30	Good	3.4	79
Guadalupe	Nuevo León	30	Good	3.4	79
Ciudad Apodaca	Nuevo León	30	Good	3.4	79
Ciudad General Escobedo	Nuevo León	30	Good	3.4	79
San Nicolás de los Garza	Nuevo León	30	Good	3.4	79

What the US AQI numbers mean

US AQI	Category	What it means
0-50	Good	Air quality is satisfactory and poses little or no risk; a good time for outdoor activity.
51-100	Moderate	Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors.
101-150	Unhealthy for Sensitive Groups	People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors.
151-200	Unhealthy	Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed.
201-300	Very Unhealthy	Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors.
301-500	Hazardous	Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500.

Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.

Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).

Air quality in Mexico today

Air quality in Mexico today

Mexico cities by AQI (most polluted first)

What the US AQI numbers mean

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