Krompachy vs Senec: PM2.5 compared
Over the last year, Krompachy's air was 25% more polluted than Senec's: PM2.5 averaged 13.6 µg/m³ against 10.9, on the 208 days both cities were measured. Krompachy had the dirtier air on 145 of those days, Senec on 61. Krompachy was over the WHO's daily guideline of 15 µg/m³ on 80 of them, Senec on 42.
Right now
The last year, day by day
Month by month
Year by year
| Year | Krompachy | Senec | Days Krompachy was worse |
|---|---|---|---|
| 2026 so far | 58 | 54 | 122 |
| 2025 | 63 | 55 | 194 |
| 2024 | 70 | 56 | 193 |
Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.
Each city's worst days
Krompachy
- 8 Oct 202610336.2 µg/m³
- 27 Jun 20269532.7 µg/m³
- 15 Mar 20269331.4 µg/m³
Senec
- 21 Mar 20268326.4 µg/m³
- 3 Dec 20257722.8 µg/m³
- 27 Jun 20267722.8 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Krompachy
Side by side with Prešov (the nearest), Čaňa (Slovakia's worst on 30 days), Gujranwala (the world's worst on 30 days).
Senec
Side by side with Chorvátsky Grob - Čierna Voda (the nearest), Čaňa (Slovakia's worst on 30 days), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Krompachy and Senec, 13 Oct 2025 – 12 Oct 2026, smogrank.com/compare/sk-krompachy/sk-senec (accessed 13 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.
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-13 00:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.