SmogRank / Australia / New South Wales / Parramatta

Parramatta, month by month

Parramatta has a measured daily mean on 1,190 days since 1 January 2023. Its worst month was April 2026, at 56 US AQI (11.8 µg/m³), 735th of 2,941 cities on that month's world ranking. Its cleanest was August 2025, at 25 US AQI (4.5 µg/m³). 2025 averaged 36 US AQI (6.4 µg/m³), against 37 US AQI (6.6 µg/m³) in 2024.

Every month since 2023

2026too few days for a mean (a year needs 200)187 days measured

Jan46#1,433 Feb51#1,589Mar16 daysApr56#735May20 daysJun16 daysJul21 daysAug19 daysSep16 daysOct8 days

202536 for the year349 days measured2,270th of 2,681 in the world

Jan32#2,043 Feb32#2,206 Mar33#2,302 Apr35#2,214 May27#2,334 Jun53#1,179 Jul43#1,824 Aug25#2,767 Sep33#2,136 Oct31#1,821 Nov35#2,100 Dec47#1,734

202437 for the year325 days measured1,626th of 2,097 in the world

Jan14 daysFeb37#1,575 Mar42#859 Apr38#1,468 May44#1,314 Jun37#1,836 Jul30#2,159 Aug38#1,587 Sep34#1,440 Oct34#1,409 Nov32#2,112 Dec36#1,884

202338 for the year329 days measured1,070th of 1,355 in the world

Jan27#1,101 Feb34#1,005 Mar33#726 Apr29#1,328 May43#996 Jun48#1,008 Jul49#782 Aug46#958 Sep53#563 Oct33#1,492 Nov28#1,970Dec2 days

Each square is a month's mean PM2.5 in US AQI from Parramatta'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 Parramatta 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

9 months

Month	Why
Oct 2026	8 of 12 days measured; a month needs 9. The others: 4 with readings for part of the day (a day needs 18 hours).
Sep 2026	16 of 30 days measured; a month needs 21. The others: 14 with readings for part of the day (a day needs 18 hours).
Aug 2026	19 of 31 days measured; a month needs 22. The others: 12 with readings for part of the day (a day needs 18 hours).
Jul 2026	21 of 31 days measured; a month needs 22. The others: 10 with readings for part of the day (a day needs 18 hours).
Jun 2026	16 of 30 days measured; a month needs 21. The others: 1 with no readings from the monitor, 13 with readings for part of the day (a day needs 18 hours).
May 2026	20 of 31 days measured; a month needs 22. The others: 11 with readings for part of the day (a day needs 18 hours).
Mar 2026	16 of 31 days measured; a month needs 22. The others: 15 with readings for part of the day (a day needs 18 hours).
Jan 2024	14 of 31 days measured; a month needs 22. The others: 16 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours).
Dec 2023	2 of 31 days measured; a month needs 22. The others: 24 with no readings from the monitor, 5 with readings for part of the day (a day needs 18 hours).

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

Parramatta's worst months

Month	US AQI	Days measured	World rank
April 2026	5611.8 µg/m³	21 of 30	735thof 2,941
June 2025	5310.4 µg/m³	28 of 30	1,179thof 2,508
September 2023	5310.2 µg/m³	27 of 30	563rdof 2,176
February 2026	519.3 µg/m³	23 of 28	1,589thof 2,866
July 2023	498.8 µg/m³	31 of 31	782ndof 1,432
June 2023	488.6 µg/m³	30 of 30	1,008thof 1,603

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.

Parramatta's worst days

Day	US AQI
10 Apr 2026	9834.5 µg/m³
17 May 2024	9130.5 µg/m³
12 Sept 2026	8627.8 µg/m³
12 Sept 2023	7924.0 µg/m³
14 Sept 2023	7622.7 µg/m³
11 Oct 2026	7622.5 µg/m³
7 Sept 2023	7522.1 µg/m³
22 Jun 2025	7521.8 µg/m³
13 Sept 2023	7421.3 µg/m³
1 Feb 2026	7320.9 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, Parramatta, 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/parramatta/history (accessed 12 Oct 2026).

Download chart (PNG)

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.

Parramatta now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-12 21:07 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).