Svishtov vs Varna AQI Comparison

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

Lower average AQI: Varna (110-pt gap)PM2.5: Svishtov 107.7 ug/m3 · Varna 11.9 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2023-12-31–2024-12-31 and 2024-06-06–2024-12-31.

Compare two cities

City A

City B

Svishtov vs Varna

Svishtov

Veliko Tarnovo, Bulgaria

162

PM2.5: 107.7 ug/m3
PM10: 106.7 ug/m3
Worst month: December
Trend: n/a

EPA category: Unhealthy

Varna

Varna, Bulgaria

PM2.5: 11.9 ug/m3
PM10: 25.8 ug/m3
Worst month: November
Trend: n/a

EPA category: Moderate

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

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Svishtov

214

133

100

258

181

169

268

372

Varna

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.