Ballarat vs Stawell: PM2.5 compared
Over the last year, Stawell's air was 39% more polluted than Ballarat's: PM2.5 averaged 6.1 µg/m³ against 4.4, on the 211 days both cities were measured. Stawell had the dirtier air on 157 of those days, Ballarat on 48. Stawell was over the WHO's daily guideline of 15 µg/m³ on 14 of them, Ballarat on 4.
Right now
The last year, day by day
Month by month
Each city's worst days
Ballarat
- 9 Jan 20269130.5 µg/m³
- 9 Jul 20266818.2 µg/m³
- 8 Jul 20266315.3 µg/m³
Stawell
- 12 Jan 202610135.7 µg/m³
- 19 Apr 20269331.5 µg/m³
- 11 Jan 20269130.4 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
Ballarat
Side by side with Aintree (the nearest), Tuggeranong (Australia's worst on 30 days), Gujranwala (the world's worst on 30 days).
Stawell
Side by side with Tuggeranong (Australia's worst on 30 days), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Ballarat and Stawell, 9 Oct 2025 – 8 Oct 2026, smogrank.com/compare/au-ballarat/au-stawell (accessed 8 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 2026-10-08 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).