Hirschaid vs Norderstedt AQI Comparison

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

Lower average AQI: Norderstedt (3-pt gap)PM2.5: Hirschaid 17.0 ug/m3 · Norderstedt 16.4 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-04-07–2024-12-31 and 2024-11-24–2024-12-31.

Compare two cities

City A

City B

Hirschaid vs Norderstedt

Hirschaid

Bavaria, Germany

PM2.5: 17.0 ug/m3
PM10: 18.3 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

Norderstedt

Schleswig-Holstein, Germany

PM2.5: 16.4 ug/m3
PM10: 17.7 ug/m3
Worst month: December
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Hirschaid

Norderstedt

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.