Air Quality Index (AQI) in Mexico 🇲🇽

Live Air Quality Index (AQI) and PM2.5 Levels in Mexico

Currently, the Air Quality Index (AQI) in Mexico City, the capital of Mexico, is measured at a score of 112. According to the US EPA health standard, this air quality rating is categorized as Moderate. The current atmosphere in Mexico City is influenced by a PM2.5 (fine particulate matter) concentration of 39.8 µg/m³ and PM10 levels recorded at 40.0 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 66.8 µg/m³.

Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Mexico based on industrial output, traffic density, and local weather patterns. Real-time pollution data and respiratory health alerts are also being actively monitored in cities like Tijuana, Iztapalapa, León de los Aldama, Puebla and Ecatepec de Morelos. Tracking these air quality metrics is essential for residents nationwide to manage outdoor exposure and maintain respiratory safety during periods of increased particulate concentration.

Air Quality Snapshot: Mexico Right Now

Across 100 monitored cities in Mexico, live air quality currently ranges from a low of 11 AQI in Chilpancingo (the cleanest air right now) to a high of 121 AQI in Salamanca (the most polluted). By US EPA health band, the nationwide distribution stands at 26 Good, 53 Moderate, 21 Unhealthy for Sensitive Groups. The average fine-particulate (PM2.5) concentration across these cities is 19.4 µg/m³ — approximately 3.9 times the World Health Organization (WHO) annual air quality guideline of 5 µg/m³.

Mexico Air Quality: Major Cities Index

Pollution Monitor & AQI Forecast: Mexico Regions

* Air Quality Index (AQI) data for Mexico is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.

What Today's Readings Mean in Mexico

The median reading across 100 monitored cities is 59.5 AQI. The national spread is 110 points, from 11 in Chilpancingo to 121 in Salamanca. Average PM2.5 is 19.4 µg/m³ (3.9× the WHO annual guideline).

At least one monitored location is unhealthy for sensitive groups. Children, older adults, and people with heart or lung conditions should limit prolonged outdoor exertion in the affected city.

See the complete AQI and pollutant reference scales

Health & Scientific Resources

→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air quality

Air Quality in Mexico — FAQ

Common questions about AQI levels, pollutants, and data sources for Mexico.

What is the current air quality in Mexico?

Live AQI readings for 100 city(ies) across Mexico are listed above on the US EPA 0-500 scale.

Where does Mexico's AQI data come from?

Real-time readings come from ground-based monitoring stations operated by national environmental agencies in Mexico, delivered via WeatherAPI.com and aggregated using the EPA AQI formula.

What is a healthy AQI value in Mexico?

On the EPA scale used worldwide, 0-50 is Good, 51-100 is Moderate, 101-150 is Unhealthy for sensitive groups, 151-200 is Unhealthy, 201-300 is Very Unhealthy, and 301-500 is Hazardous. The WHO 24-hour PM2.5 guideline is 15 μg/m³.

Why do AQI readings vary between cities in Mexico?

Air quality is highly local — major pollution sources (traffic, industry, dust, wildfires) cluster around cities, while wind direction and topography move them around. Comparing nearby readings on this page is the best way to see how conditions change across Mexico.