Slovenia City AQI Comparison
Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI. This pilot covers 17 eligible cities with OpenAQ-derived daily AQI history.
Compare two cities
vs
Featured comparisons
Polzela vs Kostel→
Highest vs cleanest city
AQI gap 8155 / 360 days
Polzela vs Poljčane→
Highest-AQI pair
AQI gap 2755 / 347 days
Polzela vs Ptuj→
High vs mid-range city
AQI gap 6555 / 361 days
Poljčane vs Kostel→
Second-highest vs cleanest city
AQI gap 54347 / 360 days
Postojna vs Koper→
High vs low-AQI city
AQI gap 16154 / 360 days
Poljčane vs Koper→
High vs low-AQI city
AQI gap 48347 / 360 days
Poljčane vs Postojna→
Similar high-AQI cities
AQI gap 32347 / 154 days
Postojna vs Nova Gorica→
High vs low-AQI city
AQI gap 10154 / 361 days
Postojna vs Murska Sobota→
Similar high-AQI cities
AQI gap 1154 / 362 days
Murska Sobota vs Maribor→
High vs low-AQI city
AQI gap 8362 / 362 days
Murska Sobota vs Celje→
Similar high-AQI cities
AQI gap 0362 / 362 days
Celje vs Novo Mesto→
High vs low-AQI city
AQI gap 7362 / 361 days
Methodology
The extractor maps OpenAQ monitoring locations to the nearest AQI Now city in the same country, aggregates PM2.5 and PM10 to daily city averages, and converts those concentrations to US EPA AQI. Country tool pages use only city summaries that satisfy the configured minimum daily coverage threshold.