SmogRank / Australia / New South Wales / Port Macquarie
Port Macquarie, month by month
Port Macquarie has a measured daily mean on 1,112 days since 1 January 2023. Its worst month was August 2023, at 55 US AQI (11.0 µg/m³), 451st of 1,980 cities on that month's world ranking. Its cleanest was June 2026, at 18 US AQI (3.3 µg/m³). 2025 averaged 35 US AQI (6.3 µg/m³), against 29 US AQI (5.3 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 |
|---|---|
| Mar 2026 | 16 of 31 days measured; a month needs 22. The others: 3 with no readings from the monitor, 12 with readings for part of the day (a day needs 18 hours). |
| Feb 2026 | 16 of 28 days measured; a month needs 20. The others: 1 with no readings from the monitor, 11 with readings for part of the day (a day needs 18 hours). |
| Dec 2025 | 19 of 31 days measured; a month needs 22. The others: 3 with no readings from the monitor, 9 with readings for part of the day (a day needs 18 hours). |
| Aug 2025 | 20 of 31 days measured; a month needs 22. The others: 11 with readings for part of the day (a day needs 18 hours). |
| Jun 2025 | 20 of 30 days measured; a month needs 21. The others: 10 with readings for part of the day (a day needs 18 hours). |
| May 2025 | 15 of 31 days measured; a month needs 22. The others: 16 with readings for part of the day (a day needs 18 hours). |
| Mar 2025 | 9 of 31 days measured; a month needs 22. The others: 13 with no readings from the monitor, 9 with readings for part of the day (a day needs 18 hours). |
| Dec 2024 | 21 of 31 days measured; a month needs 22. The others: 10 with readings for part of the day (a day needs 18 hours). |
| Oct 2023 | 21 of 31 days measured; a month needs 22. The others: 2 with no readings from the monitor, 8 with readings for part of the day (a day needs 18 hours). |
| Jan 2023 | 18 of 31 days measured; a month needs 22. The others: 2 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.
Port Macquarie's worst months
| Month | US AQI | World rank |
|---|---|---|
| August 2023 | 5511.0 µg/m³ | 451stof 1,980 |
| September 2025 | 5410.9 µg/m³ | 571stof 3,104 |
| October 2025 | 529.9 µg/m³ | 572ndof 2,614 |
| January 2026 | 458.1 µg/m³ | 1,462ndof 2,617 |
| April 2026 | 427.5 µg/m³ | 1,744thof 2,941 |
| September 2024 | 417.3 µg/m³ | 1,062ndof 2,010 |
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.
Port Macquarie's worst days
| Day | US AQI |
|---|---|
| 15 Aug 2026 | 15460.0 µg/m³ |
| 26 Jan 2024 | 11440.9 µg/m³ |
| 28 Sept 2025 | 11240.1 µg/m³ |
| 7 Dec 2025 | 10235.8 µg/m³ |
| 12 Aug 2023 | 9130.5 µg/m³ |
| 26 Sept 2025 | 8829.0 µg/m³ |
| 27 Sept 2025 | 8426.7 µg/m³ |
| 13 Aug 2023 | 8024.7 µg/m³ |
| 16 Apr 2026 | 7421.7 µg/m³ |
| 22 Oct 2023 | 7421.6 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, Port Macquarie, 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/port-macquarie/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.
Port Macquarie now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 02:07 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).