Brisbane, Queensland, Australia Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Brisbane, Queensland, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (22nd September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 24 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 23rd Sep - 24th Sep 2025
Brisbane, Queensland, Australia
5 AM23rd Sep 2025
5 PM
4 AM24th Sep 2025
AQI
AQI
29AQI
19AQI
In the last 24 hours,
Brisbane's AQI reached its highest point of 29 at 12 PM during the Night, while the lowest point, 19, was recorded at 9 PM during the Night between 23rd Sep and 24th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Brisbane, Queensland, Australia
18°C13/23°C
18°C15/22°C
20°C14/28°C
20°C15/25°C
18°C12/24°C
15°C12/20°C
15°C9/21°C
16°C14/21°C
16°C12/22°C
18°C13/24°C
19°C14/25°C
20°C16/27°C
18°C15/21°C
18°C15/22°C
18°C14/24°C
20°C14/28°C
22°C17/28°C
18°C14/22°C
17°C11/24°C
18°C14/22°C
18°C14/23°C
19°C14/24°C
19°C14/24°C
22°C16/30°C
22°C18/29°C
21°C17/28°C
19°C17/22°C
21°C16/28°C
21°C16/29°C
--°C/°C
--°C/°C
29AQI
23AQI
28AQI
22AQI
2025 Days Vs Air Quality
Brisbane, Queensland, Australia
100%
265
Total number of days with different AQI categories in last 266 days in 2025 (99 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 266 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Brisbane, Queensland, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
25AQI
24AQI
24AQI
22AQI
21AQI
24AQI
20AQI
21AQI
18AQI
19AQI
18AQI
22AQI
21AQI
21AQI
26AQI
21AQI
21AQI
25AQI
25AQI
27AQI
29AQI
30AQI
33AQI
33AQI
29AQI
27AQI
24AQI
25AQI
23AQI
23AQI
21AQI
21AQI
22AQI
26AQI
25AQI
25AQI
25AQI
21AQI
22AQI
20AQI
22AQI
25AQI
28AQI
24AQI
24AQI
25AQI
29AQI
23AQI
21AQI
20AQI
21AQI
20AQI
21AQI
22AQI
21AQI
22AQI
20AQI
20AQI
23AQI
25AQI
20AQI
19AQI
19AQI
17AQI
17AQI
16AQI
17AQI
19AQI
19AQI
19AQI
18AQI
18AQI
18AQI
18AQI
28AQI
24AQI
23AQI
23AQI
21AQI
20AQI
20AQI
20AQI
19AQI
20AQI
19AQI
20AQI
20AQI
16AQI
19AQI
19AQI
18AQI
18AQI
18AQI
19AQI
23AQI
21AQI
20AQI
17AQI
17AQI
18AQI
18AQI
19AQI
17AQI
18AQI
19AQI
22AQI
24AQI
27AQI
26AQI
24AQI
21AQI
19AQI
21AQI
16AQI
18AQI
16AQI
16AQI
19AQI
21AQI
19AQI
18AQI
17AQI
17AQI
18AQI
19AQI
19AQI
19AQI
19AQI
17AQI
16AQI
16AQI
16AQI
16AQI
16AQI
19AQI
18AQI
17AQI
16AQI
17AQI
18AQI
19AQI
19AQI
20AQI
24AQI
26AQI
24AQI
19AQI
20AQI
19AQI
18AQI
17AQI
17AQI
16AQI
17AQI
18AQI
22AQI
23AQI
23AQI
20AQI
17AQI
17AQI
20AQI
20AQI
27AQI
27AQI
28AQI
33AQI
31AQI
30AQI
28AQI
25AQI
25AQI
22AQI
24AQI
21AQI
22AQI
23AQI
22AQI
20AQI
19AQI
18AQI
17AQI
16AQI
19AQI
23AQI
24AQI
22AQI
22AQI
30AQI
22AQI
20AQI
23AQI
25AQI
24AQI
33AQI
32AQI
33AQI
33AQI
27AQI
26AQI
25AQI
24AQI
25AQI
24AQI
25AQI
26AQI
21AQI
19AQI
20AQI
21AQI
19AQI
22AQI
21AQI
20AQI
22AQI
23AQI
25AQI
25AQI
24AQI
21AQI
19AQI
19AQI
21AQI
21AQI
21AQI
21AQI
22AQI
21AQI
20AQI
22AQI
20AQI
20AQI
22AQI
21AQI
26AQI
23AQI
27AQI
31AQI
26AQI
24AQI
24AQI
24AQI
25AQI
22AQI
22AQI
21AQI
25AQI
24AQI
24AQI
23AQI
25AQI
31AQI
23AQI
22AQI
21AQI
22AQI
21AQI
21AQI
27AQI
32AQI
27AQI
22AQI
22AQI
24AQI
24AQI
23AQI
20AQI
20AQI
19AQI
22AQI
24AQI
23AQI
24AQI
No. of days
202522AQI
Highest AQI recorded in
January24AQI
Lowest AQI recorded in
May19AQI
202423AQI
Highest AQI recorded in
September35AQI
Lowest AQI recorded in
July17AQI
202327AQI
Highest AQI recorded in
May33AQI
Lowest AQI recorded in
February22AQI
202225AQI
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
March23AQI
202125AQI
Highest AQI recorded in
September30AQI
Lowest AQI recorded in
November20AQI
202027AQI
Highest AQI recorded in
November35AQI
Lowest AQI recorded in
March24AQI
Most & Least Polluted Years Over the Last 6 Years
Brisbane's annual 2025 AQI (22) shows an average percentage change of -13.7% (improved AQI) compared to previous years: 2020 (27), 2021 (25), 2022 (25), 2023 (27), 2024 (23).