Thessaloniki Health Impact
Thessaloniki averaged 16.2 ug/m3 PM2.5, equal to 3.2x the WHO annual PM2.5 guideline and about 0.7 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 3 mapped monitoring locations in Central Macedonia, Greece.
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Average EPA AQI
Rank 5 of 22 cities by average AQI
PM2.5
16.2
ug/m3 annualized city average
Seasonality
January
Cleanest: August
Health indicator
0.7
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
What this health page measures
Translate PM2.5 exposure into WHO exceedance and a simple cigarette-equivalent indicator.
For Thessaloniki, the current global analytics build covers 307 daily rows from 2024-01-01 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.