SmogRank / Poland / Świętokrzyskie / Starachowice
Starachowice, month by month
Starachowice has a measured daily mean on 1,104 days since 1 January 2023. Its worst month was January 2026, at 110 US AQI (39.1 µg/m³), 88th of 2,617 cities on that month's world ranking. Its cleanest was July 2024, at 39 US AQI (7.0 µg/m³). 2025 averaged 64 US AQI (16.1 µg/m³), against 65 US AQI (16.8 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 | 6 of 12 days measured; a month needs 9. 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 | 12 of 30 days measured; a month needs 21. The others: 18 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 | 16 of 31 days measured; a month needs 22. The others: 15 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 | 18 of 31 days measured; a month needs 22. The others: 13 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.
Starachowice's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 11039.1 µg/m³ | 88thof 2,617 | Europe, January and February 2026 Poland, January 2026 |
| February 2025 | 10537.3 µg/m³ | 128thof 2,633 | Europe, 14 February to 1 March 2025 Europe, 1 to 14 February 2025 |
| March 2026 | 8829.1 µg/m³ | 302ndof 2,971 | Europe, 18 to 25 March 2026 Europe, 1 to 12 March 2026 |
| January 2024 | 8728.2 µg/m³ | 126thof 2,385 | Europe, 8 to 27 January 2024 |
| December 2024 | 8225.8 µg/m³ | 138thof 2,616 | Europe, 24 December 2024 to 3 January 2025 Eastern Europe, 30 November to 8 December 2024 |
| March 2024 | 8125.0 µg/m³ | 76thof 1,698 | Europe, March and April 2024 Europe, February and March 2024 |
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.
Starachowice's worst days
| Day | US AQI | Episode |
|---|---|---|
| 9 Jan 2024 | 243168.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 10 Jan 2024 | 187107.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 22 Jan 2026 | 186106.0 µg/m³ | Europe, January and February 2026 |
| 2 Mar 2023 | 17589.9 µg/m³ | Europe, 28 February to 4 March 2023 |
| 20 Jan 2026 | 17589.6 µg/m³ | Europe, January and February 2026 |
| 8 Mar 2026 | 16879.3 µg/m³ | Europe, 1 to 12 March 2026 |
| 21 Jan 2026 | 16778.5 µg/m³ | Europe, January and February 2026 |
| 17 Feb 2025 | 16677.2 µg/m³ | Europe, 14 February to 1 March 2025 |
| 8 Mar 2024 | 16676.4 µg/m³ | Europe, February and March 2024 |
| 19 Jan 2026 | 16474.3 µg/m³ | Europe, January and February 2026 |
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, Starachowice, Poland, 1 Jan 2023 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/pl/starachowice/history (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.
Starachowice now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 04:07 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).