Estonia City AQI Comparison
Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI. This pilot covers 7 eligible cities with OpenAQ-derived daily AQI history.
Compare two cities
vs
Featured comparisons
Kohtla-Järve vs Tallinn→
Highest vs cleanest city
AQI gap 7254 / 269 days
Kohtla-Järve vs Tartu→
Highest-AQI pair
AQI gap 4254 / 252 days
Kohtla-Järve vs Narva→
High vs mid-range city
AQI gap 5254 / 253 days
Tartu vs Tallinn→
Second-highest vs cleanest city
AQI gap 3252 / 269 days
Rakvere vs Jõgeva→
High vs low-AQI city
AQI gap 2228 / 216 days
Tartu vs Jõgeva→
High vs low-AQI city
AQI gap 3252 / 216 days
Tartu vs Rakvere→
Similar high-AQI cities
AQI gap 1252 / 228 days
Rakvere vs Narva→
High vs low-AQI city
AQI gap 0228 / 253 days
Narva vs Jõgeva→
Similar high-AQI cities
AQI gap 2253 / 216 days
Jõgeva vs Tallinn→
Similar high-AQI cities
AQI gap 0216 / 269 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.