Air Quality Index (AQI) in Iran 🇮🇷

Tehran Air Quality Index
AQI INDEX
162
US EPA Standard

PM 2.5 Level
71
µg/m³

US EPA Index
4
Unhealthy

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

Currently, the Air Quality Index (AQI) in Tehran, the capital of Iran, is measured at a score of 162. According to the US EPA health standard, this air quality rating is categorized as Unhealthy. The current atmosphere in Tehran is influenced by a PM2.5 (fine particulate matter) concentration of 71.2 µg/m³ and PM10 levels recorded at 97.1 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 83.9 µg/m³.

Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Iran 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 Mashhad, Isfahan, Karaj, Tabriz and Shiraz. 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: Iran Right Now

Across 82 monitored cities in Iran, live air quality currently ranges from a low of 36 AQI in Ardabīl (the cleanest air right now) to a high of 162 AQI in Tehran (the most polluted). By US EPA health band, the nationwide distribution stands at 4 Good, 68 Moderate, 8 Unhealthy for Sensitive Groups, 2 Unhealthy. The average fine-particulate (PM2.5) concentration across these cities is 23.0 µg/m³ — approximately 4.6 times the World Health Organization (WHO) annual air quality guideline of 5 µg/m³.

Iran Air Quality: Major Cities Index

Pollution Monitor & AQI Forecast: Iran Regions

* Air Quality Index (AQI) data for Iran 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 Iran

The median reading across 82 monitored cities is 72.0 AQI. The national spread is 126 points, from 36 in Ardabīl to 162 in Tehran. Average PM2.5 is 23.0 µg/m³ (4.6× the WHO annual guideline).

At least one monitored location is Unhealthy. Reduce prolonged outdoor exertion and check the city reading before planning exercise or travel.

See the complete AQI and pollutant reference scales

Air Quality in Iran — FAQ

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

What is the current air quality in Iran?
Live AQI readings for 82 city(ies) across Iran are listed above on the US EPA 0-500 scale.
Where does Iran's AQI data come from?
Real-time readings come from ground-based monitoring stations operated by national environmental agencies in Iran, delivered via WeatherAPI.com and aggregated using the EPA AQI formula.
What is a healthy AQI value in Iran?
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 Iran?
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 Iran.

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