Latvia City AQI Comparison
Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI. This pilot covers 4 eligible cities with OpenAQ-derived daily AQI history.
Compare two cities
vs
Featured comparisons
Liepāja vs Ventspils→
Highest vs cleanest city
AQI gap 8344 / 320 days
Liepāja vs Rēzekne→
Highest-AQI pair
AQI gap 0344 / 316 days
Liepāja vs Riga→
High vs mid-range city
AQI gap 6344 / 344 days
Rēzekne vs Ventspils→
Second-highest vs cleanest city
AQI gap 8316 / 320 days
Rēzekne vs Riga→
High vs low-AQI city
AQI gap 6316 / 344 days
Riga vs Ventspils→
Similar high-AQI cities
AQI gap 2344 / 320 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.