Spencer Gulf Whyalla, Whyalla, South Australia, 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
Spencer Gulf Whyalla, Whyalla, South Australia, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 16 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Spencer Gulf Whyalla, Whyalla, South Australia, Australia
6 AM3rd Oct 2025
6 PM
5 AM4th Oct 2025
AQI
AQI
35AQI
13AQI
In the last 24 hours,
Spencer Gulf Whyalla's AQI reached its highest point of 35 at 12 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Spencer Gulf Whyalla, Whyalla, South Australia, Australia
13°C10/16°C
16°C11/22°C
23°C16/31°C
20°C14/25°C
16°C11/23°C
14°C10/19°C
12°C8/15°C
12°C9/16°C
13°C10/16°C
15°C9/20°C
18°C11/24°C
21°C14/29°C
16°C11/21°C
14°C9/19°C
19°C12/27°C
17°C13/22°C
14°C10/17°C
14°C10/18°C
13°C11/16°C
13°C10/16°C
14°C12/18°C
17°C11/25°C
19°C14/28°C
15°C13/18°C
16°C11/21°C
21°C15/31°C
16°C11/21°C
15°C9/21°C
14°C11/18°C
--°C/°C
--°C/°C
23AQI
18AQI
22AQI
19AQI
2025 Days Vs Air Quality
Spencer Gulf Whyalla, Whyalla, South Australia, Australia
97%
269
3%
7
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 276 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
Spencer Gulf Whyalla, Whyalla, South Australia, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
26AQI
27AQI
30AQI
29AQI
27AQI
30AQI
25AQI
25AQI
25AQI
23AQI
23AQI
23AQI
21AQI
27AQI
20AQI
23AQI
22AQI
26AQI
24AQI
24AQI
23AQI
25AQI
24AQI
26AQI
27AQI
39AQI
29AQI
32AQI
33AQI
36AQI
38AQI
44AQI
48AQI
50AQI
49AQI
48AQI
44AQI
42AQI
42AQI
40AQI
44AQI
61AQI
53AQI
38AQI
44AQI
36AQI
35AQI
31AQI
30AQI
29AQI
30AQI
43AQI
32AQI
30AQI
28AQI
27AQI
25AQI
25AQI
23AQI
24AQI
27AQI
24AQI
37AQI
27AQI
35AQI
39AQI
32AQI
37AQI
29AQI
28AQI
28AQI
28AQI
36AQI
34AQI
36AQI
31AQI
31AQI
27AQI
26AQI
25AQI
26AQI
27AQI
28AQI
29AQI
29AQI
30AQI
32AQI
31AQI
32AQI
32AQI
36AQI
30AQI
29AQI
27AQI
27AQI
24AQI
24AQI
24AQI
24AQI
22AQI
26AQI
26AQI
27AQI
31AQI
33AQI
28AQI
31AQI
29AQI
25AQI
19AQI
16AQI
17AQI
21AQI
27AQI
21AQI
24AQI
22AQI
22AQI
21AQI
22AQI
20AQI
33AQI
39AQI
26AQI
32AQI
26AQI
27AQI
30AQI
27AQI
25AQI
24AQI
26AQI
24AQI
25AQI
26AQI
24AQI
21AQI
21AQI
22AQI
20AQI
20AQI
23AQI
23AQI
25AQI
46AQI
27AQI
33AQI
27AQI
28AQI
27AQI
30AQI
32AQI
27AQI
30AQI
31AQI
25AQI
24AQI
20AQI
21AQI
21AQI
22AQI
21AQI
26AQI
25AQI
26AQI
24AQI
24AQI
26AQI
30AQI
31AQI
42AQI
82AQI
65AQI
54AQI
57AQI
44AQI
43AQI
39AQI
33AQI
31AQI
30AQI
28AQI
31AQI
60AQI
43AQI
37AQI
33AQI
32AQI
34AQI
30AQI
27AQI
28AQI
26AQI
25AQI
31AQI
32AQI
27AQI
29AQI
27AQI
27AQI
28AQI
24AQI
22AQI
22AQI
23AQI
25AQI
21AQI
23AQI
21AQI
25AQI
23AQI
23AQI
29AQI
28AQI
28AQI
29AQI
27AQI
31AQI
34AQI
29AQI
31AQI
29AQI
28AQI
27AQI
26AQI
24AQI
24AQI
21AQI
21AQI
23AQI
20AQI
19AQI
22AQI
22AQI
29AQI
27AQI
24AQI
23AQI
24AQI
23AQI
23AQI
24AQI
28AQI
28AQI
25AQI
24AQI
22AQI
22AQI
25AQI
23AQI
22AQI
22AQI
25AQI
22AQI
22AQI
22AQI
24AQI
28AQI
25AQI
22AQI
20AQI
21AQI
18AQI
20AQI
22AQI
26AQI
22AQI
21AQI
13AQI
9AQI
13AQI
15AQI
12AQI
19AQI
16AQI
26AQI
39AQI
30AQI
26AQI
26AQI
34AQI
29AQI
26AQI
22AQI
16AQI
No. of days
202528AQI
Highest AQI recorded in
February39AQI
Lowest AQI recorded in
October16AQI
202422AQI
Highest AQI recorded in
December29AQI
Lowest AQI recorded in
April14AQI
202317AQI
Highest AQI recorded in
February21AQI
Lowest AQI recorded in
May11AQI
202219AQI
Highest AQI recorded in
March23AQI
Lowest AQI recorded in
August10AQI
202121AQI
Highest AQI recorded in
December28AQI
Lowest AQI recorded in
June16AQI
202020AQI
Highest AQI recorded in
November30AQI
Lowest AQI recorded in
July15AQI
Most & Least Polluted Years Over the Last 6 Years
Spencer Gulf Whyalla's annual 2025 AQI (28) shows an average percentage change of 44.3% (worsened AQI) compared to previous years: 2020 (20), 2021 (21), 2022 (19), 2023 (17), 2024 (22).