SmogRank / Poland / Subcarpathia / Rzeszów
Rzeszów, month by month
Rzeszów has a measured daily mean on 1,133 days since 1 January 2023. Its worst month was January 2026, at 123 US AQI (44.5 µg/m³), 65th of 2,617 cities on that month's world ranking. Its cleanest was July 2025, at 28 US AQI (5.1 µg/m³). 2025 averaged 63 US AQI (15.4 µg/m³), against 62 US AQI (15.0 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 monitors, 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 | 4 of 31 days measured; a month needs 22. The others: 27 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 | 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.
Rzeszów's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 12344.5 µg/m³ | 65thof 2,617 | Europe, January and February 2026 Eastern Europe, January 2026and 1 more |
| February 2025 | 11541.0 µg/m³ | 89thof 2,633 | Europe, 14 February to 1 March 2025 Poland, February 2025and 1 more |
| March 2026 | 9130.8 µg/m³ | 253rdof 2,971 | Europe, 18 to 25 March 2026 Europe, 1 to 12 March 2026 |
| March 2025 | 8426.8 µg/m³ | 380thof 2,862 | Europe, March 2025 Germany, Poland and 25 more countries, March 2025and 1 more |
| February 2026 | 8326.1 µg/m³ | 339thof 2,866 | Germany, Poland and Czechia, February 2026 Europe, January and February 2026 |
| January 2024 | 8024.9 µg/m³ | 176thof 2,385 | Europe, 8 to 27 January 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.
Rzeszów's worst days
| Day | US AQI | Episode |
|---|---|---|
| 22 Jan 2026 | 236160.5 µg/m³ | Europe, January and February 2026 |
| 10 Jan 2024 | 200125.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 20 Jan 2026 | 194117.5 µg/m³ | Europe, January and February 2026 |
| 19 Jan 2026 | 187106.9 µg/m³ | Europe, January and February 2026 |
| 9 Jan 2024 | 17994.9 µg/m³ | Europe, 8 to 27 January 2024 |
| 1 Mar 2023 | 17691.0 µg/m³ | Europe, 28 February to 4 March 2023 |
| 8 Mar 2026 | 16778.6 µg/m³ | Europe, 1 to 12 March 2026 |
| 2 Mar 2023 | 16574.9 µg/m³ | Europe, 28 February to 4 March 2023 |
| 28 Feb 2025 | 16474.6 µg/m³ | Europe, 14 February to 1 March 2025 Poland, February 2025 |
| 7 Feb 2023 | 16372.6 µg/m³ | Europe, 6 to 25 February 2023 |
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, Rzeszów, 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/rzeszow/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.
Rzeszów now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 03:07 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).