SmogRank / Australia / New South Wales / Richmond
Richmond, month by month
Richmond, New South Wales has a measured daily mean on 1,213 days since 1 January 2023. Its worst month was June 2025, at 55 US AQI (11.5 µg/m³), 891st of 2,508 cities on that month's world ranking. Its cleanest was August 2025, at 27 US AQI (4.8 µg/m³). 2025 averaged 40 US AQI (7.2 µg/m³), against 40 US AQI (7.2 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
3 months
| Month | Why |
|---|---|
| Feb 2024 | 1 of 29 days measured; a month needs 21. The others: 27 with no readings from the monitor, 1 missing from OpenAQ's archive. |
| Jan 2024 | 21 of 31 days measured; a month needs 22. The others: 7 with no readings from the monitor, 3 with readings for part of the day (a day needs 18 hours). |
| Jul 2023 | 19 of 31 days measured; a month needs 22. The others: 4 with no readings from the monitor, 8 with readings for part of the day (a day needs 18 hours). |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Richmond's worst months
| Month | US AQI | World rank |
|---|---|---|
| June 2025 | 5511.5 µg/m³ | 891stof 2,508 |
| June 2023 | 5511.1 µg/m³ | 639thof 1,603 |
| May 2026 | 5410.5 µg/m³ | 698thof 2,874 |
| July 2025 | 5310.4 µg/m³ | 1,176thof 2,889 |
| September 2023 | 5310.3 µg/m³ | 540thof 2,176 |
| September 2024 | 519.2 µg/m³ | 562ndof 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.
Richmond's worst days
| Day | US AQI |
|---|---|
| 10 May 2026 | 15865.5 µg/m³ |
| 4 Sept 2024 | 15865.1 µg/m³ |
| 4 May 2026 | 15561.0 µg/m³ |
| 9 May 2026 | 13147.5 µg/m³ |
| 22 Jun 2025 | 9734.0 µg/m³ |
| 12 Jun 2023 | 9230.9 µg/m³ |
| 14 Mar 2024 | 8829.0 µg/m³ |
| 11 Sept 2023 | 8728.2 µg/m³ |
| 12 Sept 2023 | 8628.0 µg/m³ |
| 11 Apr 2025 | 8527.2 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, Richmond, New South Wales, 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/richmond/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.
Richmond 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).