SmogRank / Australia / Australian Capital Territory / Canberra
Canberra, month by month
Canberra has a measured daily mean on 1,258 days since 1 January 2023. Its worst month was June 2025, at 53 US AQI (10.1 µg/m³), 1,264th of 2,508 cities on that month's world ranking. Its cleanest was November 2025, at 24 US AQI (4.3 µg/m³). 2025 averaged 33 US AQI (6.0 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
4 months
| Month | Why |
|---|---|
| Mar 2024 | 12 of 31 days measured; a month needs 22. The others: 18 with no readings from the monitors, 1 with readings for part of the day (a day needs 18 hours). |
| Feb 2024 | 11 of 29 days measured; a month needs 21. The others: 18 with no readings from the monitors. |
| Mar 2023 | 9 of 31 days measured; a month needs 22. The others: 3 with readings for part of the day (a day needs 18 hours), 19 missing from OpenAQ's archive. |
| Feb 2023 | 2 of 28 days measured; a month needs 20. The others: 1 with readings for part of the day (a day needs 18 hours), 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Canberra's worst months
| Month | US AQI | World rank |
|---|---|---|
| June 2025 | 5310.1 µg/m³ | 1,264thof 2,508 |
| May 2024 | 488.6 µg/m³ | 1,094thof 2,684 |
| June 2024 | 488.6 µg/m³ | 1,082ndof 2,563 |
| April 2024 | 468.3 µg/m³ | 1,267thof 2,520 |
| April 2026 | 468.2 µg/m³ | 1,522ndof 2,941 |
| July 2023 | 427.5 µg/m³ | 918thof 1,432 |
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.
Canberra's worst days
| Day | US AQI |
|---|---|
| 6 Oct 2026 | 10938.6 µg/m³ |
| 4 Oct 2026 | 7924.0 µg/m³ |
| 3 Jun 2025 | 7622.5 µg/m³ |
| 5 Oct 2026 | 7622.4 µg/m³ |
| 23 Jun 2025 | 7120.0 µg/m³ |
| 10 Jun 2026 | 7019.5 µg/m³ |
| 20 Apr 2026 | 7019.4 µg/m³ |
| 2 Jun 2025 | 7019.1 µg/m³ |
| 28 May 2024 | 6818.1 µg/m³ |
| 27 May 2025 | 6717.6 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, Canberra, Australia, 1 Jan 2023 – 12 Oct 2026. Monitor data from ACT Government via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/au/canberra/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.
Canberra now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 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).