SmogRank / Australia / New South Wales / Narrabri
Narrabri, month by month
Narrabri has a measured daily mean on 1,280 days since 1 January 2023. Its worst month was November 2023, at 34 US AQI (6.2 µg/m³), 1,654th of 2,243 cities on that month's world ranking. Its cleanest was August 2025, at 13 US AQI (2.4 µg/m³). 2025 averaged 23 US AQI (4.2 µg/m³), against 24 US AQI (4.3 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
2 months
| Month | Why |
|---|---|
| Jan 2024 | 14 of 31 days measured; a month needs 22. The others: 15 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
| Dec 2023 | 19 of 31 days measured; a month needs 22. The others: 12 with no readings from the monitor. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Narrabri's worst months
| Month | US AQI | World rank |
|---|---|---|
| November 2023 | 346.2 µg/m³ | 1,654thof 2,243 |
| October 2025 | 346.2 µg/m³ | 1,506thof 2,614 |
| October 2023 | 335.9 µg/m³ | 1,526thof 2,012 |
| November 2024 | 325.7 µg/m³ | 2,112thof 2,624 |
| August 2024 | 305.4 µg/m³ | 1,836thof 2,010 |
| January 2026 | 305.4 µg/m³ | 2,271stof 2,617 |
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.
Narrabri's worst days
| Day | US AQI |
|---|---|
| 10 Dec 2023 | 13147.6 µg/m³ |
| 9 Dec 2023 | 10637.6 µg/m³ |
| 12 Dec 2023 | 9834.4 µg/m³ |
| 2 Nov 2023 | 7622.7 µg/m³ |
| 17 Dec 2023 | 7220.4 µg/m³ |
| 9 Oct 2025 | 7119.8 µg/m³ |
| 3 Nov 2023 | 7119.7 µg/m³ |
| 18 Dec 2023 | 7019.4 µg/m³ |
| 20 Aug 2026 | 6818.0 µg/m³ |
| 25 Aug 2024 | 6516.7 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, Narrabri, 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/narrabri/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.
Narrabri 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).