Roztoky Health Impact
Roztoky averaged 18.0 ug/m3 PM2.5, equal to 3.6x the WHO annual PM2.5 guideline and about 0.8 cigarettes per day by the simple AQI Now indicator. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Středočeský Kraj, Czech Republic.
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Average EPA AQI
Rank 43 of 61 cities by average AQI
PM2.5
18.0
ug/m3 annualized city average
Seasonality
November
Cleanest: September
Health indicator
0.8
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 Roztoky, the current global analytics build covers 347 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.