Wollongong Illawarra, Wollongong, New South Wales, Australia Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Wollongong Illawarra, Wollongong, New South Wales, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (21st October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 61 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Oct - 22nd Oct 2025
Wollongong Illawarra, Wollongong, New South Wales, Australia
6 AM21st Oct 2025
6 PM
5 AM22nd Oct 2025
AQI
AQI
65AQI
53AQI
In the last 24 hours,
Wollongong Illawarra's AQI reached its highest point of 65 at 12 AM during the Night, while the lowest point, 53, was recorded at 8 PM during the Night between 21st Oct and 22nd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Wollongong Illawarra, Wollongong, New South Wales, Australia
14°C10/19°C
12°C8/16°C
16°C11/22°C
17°C11/22°C
20°C15/25°C
21°C16/26°C
18°C15/22°C
16°C13/19°C
19°C14/24°C
19°C14/23°C
16°C12/23°C
16°C12/22°C
15°C11/20°C
19°C13/26°C
20°C15/26°C
17°C13/21°C
21°C14/25°C
22°C18/26°C
20°C16/25°C
20°C15/26°C
19°C15/26°C
15°C11/20°C
17°C10/24°C
18°C13/23°C
20°C15/25°C
22°C16/31°C
17°C15/21°C
18°C12/24°C
23°C16/30°C
--°C/°C
--°C/°C
42AQI
36AQI
40AQI
36AQI
2025 Days Vs Air Quality
Wollongong Illawarra, Wollongong, New South Wales, Australia
98%
288
2%
6
Total number of days with different AQI categories in last 294 days in 2025 (71 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 294 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
Wollongong Illawarra, Wollongong, New South Wales, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
28AQI
26AQI
26AQI
33AQI
36AQI
25AQI
27AQI
23AQI
21AQI
20AQI
22AQI
27AQI
29AQI
27AQI
23AQI
28AQI
30AQI
26AQI
23AQI
27AQI
35AQI
25AQI
31AQI
26AQI
28AQI
34AQI
38AQI
35AQI
30AQI
30AQI
23AQI
22AQI
21AQI
31AQI
41AQI
37AQI
32AQI
28AQI
24AQI
23AQI
22AQI
24AQI
29AQI
27AQI
27AQI
23AQI
23AQI
34AQI
27AQI
26AQI
25AQI
22AQI
23AQI
31AQI
23AQI
25AQI
28AQI
35AQI
35AQI
30AQI
28AQI
25AQI
27AQI
22AQI
22AQI
20AQI
21AQI
24AQI
17AQI
19AQI
23AQI
37AQI
47AQI
34AQI
32AQI
27AQI
28AQI
32AQI
33AQI
24AQI
27AQI
21AQI
23AQI
22AQI
23AQI
22AQI
17AQI
20AQI
17AQI
23AQI
21AQI
36AQI
26AQI
32AQI
24AQI
25AQI
24AQI
20AQI
24AQI
33AQI
29AQI
28AQI
33AQI
24AQI
26AQI
26AQI
26AQI
40AQI
28AQI
30AQI
24AQI
26AQI
22AQI
22AQI
21AQI
19AQI
19AQI
22AQI
17AQI
18AQI
16AQI
21AQI
19AQI
18AQI
20AQI
18AQI
22AQI
20AQI
20AQI
22AQI
19AQI
18AQI
23AQI
19AQI
20AQI
25AQI
18AQI
18AQI
19AQI
17AQI
19AQI
20AQI
19AQI
20AQI
23AQI
40AQI
20AQI
27AQI
26AQI
28AQI
29AQI
29AQI
26AQI
21AQI
24AQI
27AQI
21AQI
17AQI
16AQI
16AQI
17AQI
20AQI
22AQI
24AQI
21AQI
26AQI
24AQI
27AQI
31AQI
36AQI
35AQI
40AQI
37AQI
30AQI
27AQI
26AQI
26AQI
28AQI
29AQI
27AQI
22AQI
19AQI
18AQI
20AQI
25AQI
24AQI
20AQI
23AQI
26AQI
22AQI
18AQI
24AQI
21AQI
24AQI
24AQI
26AQI
26AQI
27AQI
28AQI
26AQI
26AQI
26AQI
25AQI
24AQI
22AQI
24AQI
19AQI
18AQI
19AQI
18AQI
18AQI
20AQI
21AQI
22AQI
23AQI
23AQI
24AQI
24AQI
23AQI
19AQI
18AQI
18AQI
21AQI
22AQI
20AQI
20AQI
18AQI
18AQI
18AQI
18AQI
17AQI
16AQI
18AQI
18AQI
19AQI
20AQI
23AQI
20AQI
18AQI
16AQI
17AQI
18AQI
20AQI
21AQI
20AQI
23AQI
30AQI
22AQI
26AQI
23AQI
22AQI
23AQI
21AQI
20AQI
22AQI
23AQI
22AQI
24AQI
20AQI
22AQI
22AQI
19AQI
18AQI
19AQI
19AQI
21AQI
29AQI
37AQI
24AQI
26AQI
17AQI
33AQI
28AQI
40AQI
38AQI
35AQI
38AQI
33AQI
49AQI
59AQI
52AQI
45AQI
63AQI
46AQI
35AQI
40AQI
41AQI
48AQI
54AQI
39AQI
43AQI
60AQI
61AQI
28AQI
27AQI
26AQI
26AQI
21AQI
26AQI
23AQI
20AQI
23AQI
45AQI
No. of days
202526AQI
Highest AQI recorded in
October45AQI
Lowest AQI recorded in
August20AQI
202428AQI
Highest AQI recorded in
January32AQI
Lowest AQI recorded in
July22AQI
202326AQI
Highest AQI recorded in
September35AQI
Lowest AQI recorded in
April22AQI
202226AQI
Highest AQI recorded in
July28AQI
Lowest AQI recorded in
June24AQI
202126AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
November24AQI
202026AQI
Highest AQI recorded in
November32AQI
Lowest AQI recorded in
May21AQI
Most & Least Polluted Years Over the Last 6 Years
Wollongong Illawarra's annual 2025 AQI (26) shows an average percentage change of -1.8% (improved AQI) compared to previous years: 2020 (26), 2021 (26), 2022 (26), 2023 (26), 2024 (28).