Athens vs Cholargós AQI Comparison

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

Lower average AQI: Cholargós (18-pt gap)PM2.5: Athens 17.8 ug/m3 · Cholargós 10.1 ug/m3

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

Compare two cities

City A

City B

Athens vs Cholargós

Athens

Attikí, Greece

PM2.5: 17.8 ug/m3
PM10: 28.3 ug/m3
Worst month: November
Trend: n/a

EPA category: Moderate

Cholargós

Attikí, Greece

PM2.5: 10.1 ug/m3
PM10: 23.4 ug/m3
Worst month: August
Trend: n/a

EPA category: Good

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Athens

Cholargós

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.