SmogRank / Australia / South Australia / Adelaide

Adelaide, month by month

Adelaide has a measured daily mean on 339 days since 11 May 2023. Its worst month was November 2023, at 26 US AQI (4.7 µg/m³), 2,030th of 2,243 cities on that month's world ranking. Its cleanest was April 2026, at 12 US AQI (2.2 µg/m³).

Every month since 2023

202619 so far205 days measured2,773rd of 2,791 in the world
JannoneFebnoneMar15 daysApr12#2,931May21#2,692Jun22#2,300Jul26#2,635Aug17#2,879Sep14#2,946Oct7 days
2025too few days for a mean (a year needs 256)61 days measured
JannoneFebnoneMarnoneAprnoneMaynoneJunnoneJul17#2,842Aug17#2,878Sep5 daysOctnoneNovnoneDecnone
2024too few days for a mean (a year needs 257)16 days measured
Jan12 daysFebnoneMar4 daysAprnoneMaynoneJunnoneJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
2023too few days for a mean (a year needs 256)57 days measured
JanFebMarAprMay2 daysJunnoneJulnoneAugnoneSepnoneOctnoneNov26#2,030Dec20#2,171
Each square is a month's mean PM2.5 in US AQI from Adelaide's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Adelaide marked; each year, the year's.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

32 months
MonthWhy
Oct 20267 of 12 days measured; a month needs 9. The others: 2 with no readings from the monitors, 3 with under 18 hours of readings or readings that failed our checks.
Mar 202615 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Feb 2026No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2026No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 20255 of 30 days measured; a month needs 21. The others: 25 with under 18 hours of readings or readings that failed our checks.
Jun 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2025No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Feb 2025No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks.
Jan 2025No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Dec 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jun 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Mar 20244 of 31 days measured; a month needs 22. The others: 27 with under 18 hours of readings or readings that failed our checks.
Feb 2024No day measured. The others: 1 missing from OpenAQ's archive, 28 with under 18 hours of readings or readings that failed our checks.
Jan 202412 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.
Oct 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 2023No day measured. The others: 1 missing from OpenAQ's archive, 30 with under 18 hours of readings or readings that failed our checks.
Jun 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 20232 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Adelaide's worst months

MonthUS AQIDays measuredWorld rank
November 2023 264.7 µg/m³26 of 302,030thof 2,243
July 2026 264.7 µg/m³31 of 312,635thof 2,784
June 2026 224.0 µg/m³30 of 302,300thof 2,497
May 2026 213.8 µg/m³31 of 312,692ndof 2,874
December 2023 203.6 µg/m³29 of 312,171stof 2,247
July 2025 173.1 µg/m³27 of 312,842ndof 2,889

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.

Adelaide's worst days

DayUS AQI
28 May 2026 6516.8 µg/m³
15 Jul 2026 5913.3 µg/m³
27 Jun 2026 5813.0 µg/m³
29 May 2026 5712.4 µg/m³
16 Jul 2026 5611.9 µg/m³
21 Jun 2026 5511.4 µg/m³
27 May 2026 5410.5 µg/m³
17 Jul 2026 5310.1 µg/m³
4 Jul 2026 5310.0 µg/m³
14 Jul 2026 529.9 µg/m³

Daily means, the highest since 11 May 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, Adelaide, Australia, 11 May 2023 – 12 Oct 2026. Monitor data from EPA South Australia, read from the publisher; sources listed at smogrank.com/sources. smogrank.com/au/adelaide/history (accessed 12 Oct 2026).

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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.

Adelaide 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).