SmogRank / World / Europe / Slovakia / Bratislava Region

Most polluted cities in Bratislava Region, Slovakia

5 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Malacky at 9.4 µg/m³, #719 in the world.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

Bratislava Region: 5 measured citiesTrnava Region: 3 measured citiesTrenčín Region: 4 measured cities#5 Chorvátsky Grob - Čierna Voda: 8.0 µg/m³#4 Pezinok: 8.5 µg/m³#3 Bratislava: 8.8 µg/m³#2 Senec: 8.9 µg/m³#1 Malacky: 9.4 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Malacky 0% 0.75%0
Every measured city in Bratislava Region, Slovakia, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Malacky 0%
  2. 2Seneclast full day 2 Oct 0%
  3. 3Bratislava 0%
  4. 4Pezinok 0%
  5. 5Chorvátsky Grob - Čierna Vodalast full day 2 Oct 0%
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

Estimated: cities without a monitor

Bratislava Region cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Petržalka≈ 11 µg/m³Moderate
Karlova Ves≈ 11 µg/m³Moderate
Dúbravka≈ 11 µg/m³Moderate
Podunajské Biskupice≈ 12 µg/m³Moderate
Vrakuňa≈ 12 µg/m³Moderate
Devínska Nová Ves≈ 12 µg/m³Moderate

Bad-air episodes in Bratislava Region

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

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SmogRank, most polluted cities in Bratislava Region, Slovakia, PM2.5, last 30 days to 6 Oct 2026, 23:00 UTC, smogrank.com/sk/region/bratislava-region?w=30d.

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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.

Updated 2026-10-06 23:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.