Karczew vs Wrocław AQI Comparison

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

Lower average AQI: Wrocław (73-pt gap)PM2.5: Karczew 52.6 ug/m3 · Wrocław 15.2 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-11-25–2024-12-31 and 2024-01-01–2024-12-31.

Compare two cities

City A

City B

Karczew vs Wrocław

Karczew

Mazowieckie, Poland

133

PM2.5: 52.6 ug/m3
PM10: 62.3 ug/m3
Worst month: November
Trend: n/a

EPA category: Unhealthy for Sensitive Groups

Wrocław

Dolnośląskie, Poland

PM2.5: 15.2 ug/m3
PM10: 21.8 ug/m3
Worst month: March
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Karczew

134

133

Wrocław

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.