Ayr vs Canberra: PM2.5 compared
Over the last year, Ayr's air was 10% more polluted than Canberra's: PM2.5 averaged 6.4 µg/m³ against 5.8, on the 269 days both cities were measured. Ayr had the dirtier air on 157 of those days, Canberra on 109. Ayr was over the WHO's daily guideline of 15 µg/m³ on 1 of them, Canberra on 4.
Right now
The last year, day by day
Month by month
Year by year
| Year | Ayr | Canberra | Days Ayr was worse |
|---|---|---|---|
| 2026 so far | 33 | 34 | 97 |
| 2025 | 36 | 34 | 174 |
| 2024 | 27 | 37 | 98 |
| 2023 | 36 | 31 | 139 |
Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.
Each city's worst days
Ayr
- 4 Nov 20256215.2 µg/m³
- 5 Nov 20256114.7 µg/m³
- 16 Oct 20256014.1 µg/m³
Canberra
- 10 Jun 20267019.5 µg/m³
- 20 Apr 20267019.4 µg/m³
- 8 Jun 20266415.9 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Ayr
Side by side with Townsville (the nearest), Gujranwala (the world's worst on 30 days).
Canberra
Side by side with Tuggeranong (the nearest), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Ayr and Canberra, 10 Oct 2025 – 9 Oct 2026, smogrank.com/compare/au-ayr/au-canberra (accessed 9 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.
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-09 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 readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).