SmogRank / World / Belgium / Flanders / June 2026
Most polluted cities in Flanders, Belgium, June 2026
2 cities in Flanders, Belgium ranked by their average PM2.5 over the 30 days. Worst: Beersel at 6.7 µg/m³, #1,566 of 2,466 cities in the world. Cleanest: Overijse at 3.8. A city needs measurements on 70% of the days to be ranked.
Flanders has 26 cities ranked over the last 30 days, but only 2 here: most of its monitors have no readings for June 2026 in OpenAQ's archive, where ours come from, or too few to rank. Cities missing from this board weren't clean, just not measured.
Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
All cities in the world, June 2026 · All cities in Belgium, June 2026 · Flanders now
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SmogRank, most polluted cities in Flanders, Belgium, PM2.5, June 2026, smogrank.com/be/region/flanders/history/2026-06 (accessed 6 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.