Gyál vs Hajdúsámson AQI Comparison

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

Lower average AQI: Gyál (51-pt gap)PM2.5: Gyál 7.9 ug/m3 · Hajdúsámson 28.2 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-01-08–2024-12-31 and 2024-05-23–2024-12-31.

Compare two cities

City A

City B

Gyál vs Hajdúsámson

Gyál

Pest, Hungary

PM2.5: 7.9 ug/m3
PM10: 21.7 ug/m3
Worst month: January
Trend: n/a

EPA category: Good

Hajdúsámson

Hajdú-Bihar, Hungary

PM2.5: 28.2 ug/m3
PM10: 31.8 ug/m3
Worst month: November
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Gyál

Hajdúsámson

120

110

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.