Sliven AQI Trends
Sliven AQI was measured in 2024, with a trend delta of n/a AQI points. The page uses OpenAQ-derived daily history for 1 mapped monitoring location in Sliven, Bulgaria.
Search city analytics
Average EPA AQI
22
Rank 26 of 35 cities by average AQI
PM2.5
n/a
ug/m3 annualized city average
Seasonality
March
Cleanest: August
Health indicator
n/a
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Sliven
29
28
33
23
14
16
15
13
21
23
26
21
What this trends page measures
Compare yearly air-quality direction, best years, worst years, and trend deltas.
For Sliven, the current global analytics build covers 318 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.