SmogRank / Serbia / Central Serbia / Niš
Niš, month by month
Niš has a measured daily mean on 1,025 days since 1 January 2023. Its worst month was December 2023, at 156 US AQI (62.9 µg/m³), 21st of 2,247 cities on that month's world ranking. Its cleanest was May 2024, at 52 US AQI (9.4 µg/m³). 2024 averaged 84 US AQI (26.8 µg/m³), against 78 US AQI (23.7 µg/m³) in 2023.
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
13 months
| Month | Why |
|---|---|
| Feb 2026 | No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Jan 2026 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Dec 2025 | 1 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Nov 2025 | 12 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 9 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks. |
| Aug 2025 | 6 of 31 days measured; a month needs 22. The others: 25 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jan 2025 | 16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | 17 of 30 days measured; a month needs 21. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | 13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
| Jan 2023 | 21 of 31 days measured; a month needs 22. The others: 6 missing from OpenAQ's archive, 4 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.
Niš's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| December 2023 | 15662.9 µg/m³ | 21stof 2,247 | South-eastern Europe, 28 December 2023 to 1 January 2024 Eastern Europe, December 2023and 1 more |
| January 2024 | 15156.0 µg/m³ | 24thof 2,385 | Europe, 27 January to 2 February 2024 Europe, 8 to 27 January 2024and 1 more |
| November 2024 | 13348.6 µg/m³ | 31stof 2,624 | Eastern Europe, 25 to 29 November 2024 Southern Europe, November 2024and 2 more |
| February 2025 | 13147.5 µg/m³ | 52ndof 2,633 | Europe, 14 February to 1 March 2025 |
| February 2024 | 13047.1 µg/m³ | 37thof 2,486 | Europe, 27 January to 2 February 2024 |
| December 2024 | 11139.7 µg/m³ | 43rdof 2,616 | Serbia, Slovenia and 10 more countries, December 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.
Niš's worst days
| Day | US AQI | Episode |
|---|---|---|
| 21 Jan 2025 | 214139.0 µg/m³ | Germany, France and 19 more countries, January 2025 |
| 15 Jan 2024 | 213138.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 25 Dec 2023 | 202126.5 µg/m³ | – |
| 14 Jan 2024 | 197121.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 20 Dec 2023 | 197120.5 µg/m³ | Eastern Europe, December 2023 |
| 3 Jan 2024 | 195118.0 µg/m³ | – |
| 26 Nov 2024 | 195118.0 µg/m³ | Eastern Europe, 25 to 29 November 2024 |
| 6 Jan 2025 | 194117.0 µg/m³ | Eastern Europe, January 2025 |
| 28 Dec 2023 | 190110.5 µg/m³ | South-eastern Europe, 28 December 2023 to 1 January 2024 |
| 19 Nov 2024 | 187107.3 µg/m³ | Southern Europe, November 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, Niš, Serbia, 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/rs/nis/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.
Niš now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 22:07 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).