SmogRank / Australia / New South Wales / Gunnedah
Gunnedah, month by month
Gunnedah has a measured daily mean on 1,312 days since 1 January 2023. Its worst month was June 2023, at 62 US AQI (15.0 µg/m³), 382nd of 1,603 cities on that month's world ranking. Its cleanest was April 2023, at 21 US AQI (3.8 µg/m³). 2025 averaged 40 US AQI (7.2 µg/m³), against 37 US AQI (6.7 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
1 month
| Month | Why |
|---|---|
| Jan 2023 | 19 of 31 days measured; a month needs 22. The others: 1 with no readings from the monitor, 10 with readings for part of the day (a day needs 18 hours), 1 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Gunnedah's worst months
| Month | US AQI | World rank |
|---|---|---|
| June 2023 | 6215.0 µg/m³ | 382ndof 1,603 |
| June 2025 | 6114.6 µg/m³ | 483rdof 2,508 |
| July 2023 | 5812.6 µg/m³ | 328thof 1,432 |
| June 2024 | 5712.2 µg/m³ | 334thof 2,563 |
| December 2023 | 5612.0 µg/m³ | 438thof 2,247 |
| May 2023 | 5511.2 µg/m³ | 327thof 1,600 |
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.
Gunnedah's worst days
| Day | US AQI |
|---|---|
| 17 Dec 2023 | 13248.1 µg/m³ |
| 19 Dec 2023 | 12344.6 µg/m³ |
| 9 Dec 2023 | 9733.9 µg/m³ |
| 18 Dec 2023 | 9633.1 µg/m³ |
| 14 Jun 2025 | 9331.8 µg/m³ |
| 17 Jun 2023 | 8829.0 µg/m³ |
| 29 Jun 2025 | 8628.0 µg/m³ |
| 15 Jun 2025 | 8627.7 µg/m³ |
| 17 Jun 2025 | 8426.9 µg/m³ |
| 24 Jul 2024 | 8225.7 µg/m³ |
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, Gunnedah, Australia, 1 Jan 2023 – 12 Oct 2026. Monitor data from NSW DCCEEW, read from the publisher; sources listed at smogrank.com/sources. smogrank.com/au/gunnedah/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.
Gunnedah now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 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).