SmogRank / Australia / Victoria / Aintree
Aintree, month by month
Aintree has a measured daily mean on 505 days since 20 March 2023. Its worst month was January 2026, at 52 US AQI (9.5 µg/m³), 1,157th of 2,617 cities on that month's world ranking. Its cleanest was September 2024, at 20 US AQI (3.6 µg/m³).
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
29 months
| Month | Why |
|---|---|
| Oct 2026 | 4 of 12 days measured; a month needs 9. The others: 8 with no readings from the monitor. |
| Sep 2026 | No day measured. The others: 30 with no readings from the monitor. |
| Aug 2026 | No day measured. The others: 31 with no readings from the monitor. |
| Feb 2026 | 18 of 28 days measured; a month needs 20. The others: 6 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours). |
| Nov 2025 | 11 of 30 days measured; a month needs 21. The others: 18 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours). |
| Oct 2025 | No day measured. The others: 31 with no readings from the monitor. |
| Sep 2025 | No day measured. The others: 30 with no readings from the monitor. |
| Aug 2025 | No day measured. The others: 31 with no readings from the monitor. |
| Jul 2025 | No day measured. The others: 31 with no readings from the monitor. |
| Jun 2025 | No day measured. The others: 30 with no readings from the monitor. |
| May 2025 | No day measured. The others: 31 with no readings from the monitor. |
| Apr 2025 | No day measured. The others: 30 with no readings from the monitor. |
| Mar 2025 | No day measured. The others: 31 with no readings from the monitor. |
| Feb 2025 | No day measured. The others: 28 with no readings from the monitor. |
| Jan 2025 | 8 of 31 days measured; a month needs 22. The others: 22 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours). |
| Apr 2024 | 19 of 30 days measured; a month needs 21. The others: 11 with no readings from the monitor. |
| Mar 2024 | No day measured. The others: 31 with no readings from the monitor. |
| Feb 2024 | No day measured. The others: 28 with no readings from the monitor, 1 missing from OpenAQ's archive. |
| Jan 2024 | No day measured. The others: 31 with no readings from the monitor. |
| Dec 2023 | No day measured. The others: 31 with no readings from the monitor. |
| Nov 2023 | No day measured. The others: 30 with no readings from the monitor. |
| Oct 2023 | No day measured. The others: 31 with no readings from the monitor. |
| Sep 2023 | No day measured. The others: 30 with no readings from the monitor. |
| Aug 2023 | No day measured. The others: 31 with no readings from the monitor. |
| Jul 2023 | No day measured. The others: 30 with no readings from the monitor, 1 missing from OpenAQ's archive. |
| Jun 2023 | No day measured. The others: 30 with no readings from the monitor. |
| May 2023 | No day measured. The others: 31 with no readings from the monitor. |
| Apr 2023 | 4 of 30 days measured; a month needs 21. The others: 22 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours), 3 missing from OpenAQ's archive. |
| Mar 2023 | 7 of 31 days measured; a month needs 22. The others: 1 with no readings from the monitor, 3 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.
Aintree's worst months
| Month | US AQI | World rank |
|---|---|---|
| January 2026 | 529.5 µg/m³ | 1,157thof 2,617 |
| May 2024 | 386.8 µg/m³ | 1,763rdof 2,684 |
| November 2024 | 335.9 µg/m³ | 2,048thof 2,624 |
| April 2026 | 335.9 µg/m³ | 2,241stof 2,941 |
| October 2024 | 285.0 µg/m³ | 1,775thof 2,020 |
| December 2024 | 285.0 µg/m³ | 2,281stof 2,616 |
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.
Aintree's worst days
| Day | US AQI |
|---|---|
| 28 Jan 2026 | 8225.9 µg/m³ |
| 9 Jan 2026 | 8024.6 µg/m³ |
| 22 Apr 2024 | 7119.6 µg/m³ |
| 25 Jan 2026 | 7019.1 µg/m³ |
| 8 May 2024 | 6717.9 µg/m³ |
| 30 Apr 2026 | 6516.7 µg/m³ |
| 10 Jan 2026 | 6315.8 µg/m³ |
| 9 May 2024 | 6114.6 µg/m³ |
| 27 Jun 2026 | 6013.9 µg/m³ |
| 23 Apr 2024 | 6013.8 µg/m³ |
Daily means, the highest since 20 Mar 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, Aintree, Australia, 20 Mar 2023 – 12 Oct 2026. Monitor data from EPA Victoria, read from the publisher; sources listed at smogrank.com/sources. smogrank.com/au/aintree/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.
Aintree now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 18:07 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).