Norway City AQI Comparison
Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI. This pilot covers 21 eligible cities with OpenAQ-derived daily AQI history.
Compare two cities
vs
Featured comparisons
Hamar vs Bodø→
Highest vs cleanest city
AQI gap 27343 / 362 days
Hamar vs Brumunddal→
Highest-AQI pair
AQI gap 2343 / 362 days
Hamar vs Frøn→
High vs mid-range city
AQI gap 8343 / 363 days
Brumunddal vs Bodø→
Second-highest vs cleanest city
AQI gap 25362 / 362 days
Lørenskog vs Åsane→
High vs low-AQI city
AQI gap 21348 / 359 days
Brumunddal vs Åsane→
High vs low-AQI city
AQI gap 22362 / 359 days
Brumunddal vs Lørenskog→
Similar high-AQI cities
AQI gap 1362 / 348 days
Lørenskog vs Askøy→
High vs low-AQI city
AQI gap 16348 / 361 days
Lørenskog vs Porsgrunn→
Similar high-AQI cities
AQI gap 0348 / 363 days
Porsgrunn vs Bergen→
High vs low-AQI city
AQI gap 15363 / 363 days
Porsgrunn vs Oslo→
Similar high-AQI cities
AQI gap 1363 / 364 days
Oslo vs Trondheim→
High vs low-AQI city
AQI gap 13364 / 362 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.