Douglas vs Ros Comáin AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Douglas and Ros Comáin. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Ros Comáin (18-pt gap)PM2.5: Douglas 10.6 ug/m3 · Ros Comáin 5.6 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-01-01–2024-03-11 and 2024-01-29–2024-12-31.

Compare two cities

City A

City B

Douglas vs Ros Comáin

Douglas

Cork, Ireland

PM2.5: 10.6 ug/m3
PM10: 14.8 ug/m3
Worst month: March
Trend: n/a

EPA category: Good

Ros Comáin

Roscommon, Ireland

PM2.5: 5.6 ug/m3
PM10: 8.8 ug/m3
Worst month: November
Trend: n/a

EPA category: Good

Lower average AQI in this selected period: Ros Comáin. Values are historical OpenAQ-derived city summaries, not live readings.

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Douglas

Ros Comáin

What this comparison measures

Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
Seasonality — worst and cleanest months from the monthly city rollups.
Trend — difference between the earliest and latest yearly AQI average in this build.