SmogRank / Poland / Silesia / Katowice
Katowice, month by month
Katowice has a measured daily mean on 1,129 days since 1 January 2023. Its worst month was February 2025, at 98 US AQI (34.3 µg/m³), 166th of 2,633 cities on that month's world ranking. Its cleanest was June 2026, at 37 US AQI (6.7 µg/m³). 2025 averaged 64 US AQI (15.9 µg/m³), against 71 US AQI (19.8 µg/m³) in 2024.
Every month since 2023
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
Months without a mean, and why
10 months
| Month | Why |
|---|---|
| Oct 2026 | 5 of 11 days measured; a month needs 8. The others: 2 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours). |
| May 2026 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2026 | 13 of 30 days measured; a month needs 21. The others: 17 with under 18 hours of readings or readings that failed our checks. |
| Dec 2023 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2023 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2023 | 3 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Aug 2023 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Jul 2023 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Jun 2023 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| May 2023 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Katowice's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 9834.3 µg/m³ | 166thof 2,633 | Europe, 14 February to 1 March 2025 |
| January 2026 | 9230.9 µg/m³ | 167thof 2,617 | Europe, January and February 2026 Poland, January 2026 |
| December 2024 | 8829.2 µg/m³ | 99thof 2,616 | Europe, 24 December 2024 to 3 January 2025 Eastern Europe, 30 November to 8 December 2024 |
| January 2024 | 8829.1 µg/m³ | 123rdof 2,385 | Europe, 8 to 27 January 2024 |
| March 2024 | 8527.5 µg/m³ | 51stof 1,698 | Poland, 20 to 21 March 2024 Poland, 12 to 14 March 2024and 1 more |
| March 2025 | 8226.0 µg/m³ | 403rdof 2,862 | Europe, March 2025 Germany, Poland and 25 more countries, March 2025and 1 more |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Katowice's worst days
| Day | US AQI | Episode |
|---|---|---|
| 10 Jan 2024 | 193115.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 28 Dec 2024 | 17387.1 µg/m³ | Europe, 24 December 2024 to 3 January 2025 |
| 7 Feb 2023 | 17082.7 µg/m³ | Europe, 6 to 25 February 2023 |
| 22 Jan 2026 | 16880.3 µg/m³ | Europe, January and February 2026 |
| 27 Dec 2024 | 16372.1 µg/m³ | Europe, 24 December 2024 to 3 January 2025 |
| 29 Dec 2024 | 15865.1 µg/m³ | Europe, 24 December 2024 to 3 January 2025 |
| 18 Feb 2025 | 15663.3 µg/m³ | Europe, 14 February to 1 March 2025 |
| 7 Nov 2024 | 15561.6 µg/m³ | Europe, November 2024 |
| 30 Dec 2024 | 15561.2 µg/m³ | Europe, 24 December 2024 to 3 January 2025 |
| 11 Jan 2024 | 15460.1 µg/m³ | Europe, 8 to 27 January 2024 |
Daily means, the highest since 1 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Katowice, Poland, 1 Jan 2023 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/pl/katowice/history (accessed 12 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.
Katowice now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).