SmogRank / Cleaner or dirtier / Australia

Australia: cleaner or dirtier, 2025

In Australia, 22 cities have enough days in both years to compare 2025 with the same days of 2024: 6 got dirtier and 15 cleaner.

The 6 cities that got dirtier, biggest rise first

#	City	2024	2025	Change
1	AyrQueensland, Australia	27	36	+1.6 µg/m³+33%
2	TuggeranongAustralian Capital Territory, Australia	37	42	+0.8 µg/m³+12%
3	MackayQueensland, Australia	33	37	+0.7 µg/m³+12%
4	Gold CoastQueensland, Australia	27	30	+0.6 µg/m³+13%
5	BlackwaterQueensland, Australia	31	34	+0.5 µg/m³+9%
6	TownsvilleQueensland, Australia	32	34	+0.4 µg/m³+7%

The 15 cities that got cleaner, biggest fall first

#	City	2024	2025	Change
1	Logan CityQueensland, Australia	37	29	−1.4 µg/m³−21%
2	Mount IsaQueensland, Australia	34	28	−1.1 µg/m³−18%
3	SydneyNew South Wales, Australia	33	28	−1.0 µg/m³−17%
4	CoomeraQueensland, Australia	33	28	−1.0 µg/m³−17%
5	Mango HillQueensland, Australia	33	28	−0.9 µg/m³−15%
6	Sunshine CoastQueensland, Australia	32	28	−0.7 µg/m³−12%
7	BrisbaneQueensland, Australia	34	31	−0.7 µg/m³−11%
8	MoranbahQueensland, Australia	37	33	−0.7 µg/m³−10%
9	ToowoombaQueensland, Australia	31	28	−0.6 µg/m³−11%
10	NarangbaQueensland, Australia	33	30	−0.6 µg/m³−10%
11	MaryboroughQueensland, Australia	33	31	−0.5 µg/m³−8%
12	CanberraAustralian Capital Territory, Australia	37	34	−0.5 µg/m³−8%
13	Tannum SandsQueensland, Australia	29	27	−0.4 µg/m³−8%
14	GladstoneQueensland, Australia	31	29	−0.2 µg/m³−4%
15	CairnsQueensland, Australia	33	32	−0.2 µg/m³−3%

Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.

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

Updated 2026-10-07 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.