Air Quality Index (AQI) in Greece 🇬🇷

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

Currently, the Air Quality Index (AQI) in Athens, the capital of Greece, is measured at a score of 55. According to the US EPA health standard, this air quality rating is categorized as Good. The current atmosphere in Athens is influenced by a PM2.5 (fine particulate matter) concentration of 11.1 µg/m³ and PM10 levels recorded at 15.6 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 50.3 µg/m³.

Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Greece 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 Thessaloníki, Pátra, Piraeus, Lárisa and Peristéri. 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: Greece Right Now

Across 22 monitored cities in Greece, live air quality currently ranges from a low of 50 AQI in Irákleion (the cleanest air right now) to a high of 70 AQI in Thessaloníki (the most polluted). By US EPA health band, the nationwide distribution stands at 1 Good, 21 Moderate. The average fine-particulate (PM2.5) concentration across these cities is 12.7 µg/m³ — approximately 2.5 times the World Health Organization (WHO) annual air quality guideline of 5 µg/m³.

Greece Air Quality: Major Cities Index

* Air Quality Index (AQI) data for Greece 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 Greece

The median reading across 22 monitored cities is 57.0 AQI. The national spread is 20 points, from 50 in Irákleion to 70 in Thessaloníki. Average PM2.5 is 12.7 µg/m³ (2.5× the WHO annual guideline).

At least one monitored location is in the Moderate range. People unusually sensitive to air pollution may want to reduce prolonged outdoor exertion there.

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 Greece — FAQ

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

What is the current air quality in Greece?

Live AQI readings for 22 city(ies) across Greece are listed above on the US EPA 0-500 scale.

Where does Greece's AQI data come from?

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

What is a healthy AQI value in Greece?

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 Greece?

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 Greece.