Port Augusta, South Australia, 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
Port Augusta, South Australia, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 26 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Port Augusta, South Australia, Australia
6 AM17th Sep 2025
6 PM
5 AM18th Sep 2025
AQI
AQI
38AQI
16AQI
In the last 24 hours,
Port Augusta's AQI reached its highest point of 38 at 8 PM during the Night, while the lowest point, 16, was recorded at 5 PM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Port Augusta, South Australia, Australia
12°C6/19°C
13°C7/20°C
14°C8/21°C
16°C12/21°C
14°C9/20°C
16°C9/23°C
20°C15/27°C
15°C12/17°C
12°C9/18°C
12°C7/16°C
10°C6/15°C
9°C6/13°C
10°C5/16°C
12°C6/17°C
14°C8/22°C
15°C9/23°C
14°C10/19°C
16°C9/23°C
24°C15/32°C
21°C14/27°C
17°C11/24°C
15°C9/24°C
11°C6/16°C
12°C8/17°C
12°C7/17°C
14°C7/21°C
17°C10/24°C
21°C15/30°C
15°C10/22°C
--°C/°C
--°C/°C
24AQI
17AQI
23AQI
20AQI
2025 Days Vs Air Quality
Port Augusta, South Australia, Australia
100%
259
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 260 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
Port Augusta, South Australia, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
25AQI
24AQI
25AQI
26AQI
23AQI
25AQI
21AQI
21AQI
22AQI
22AQI
21AQI
23AQI
25AQI
27AQI
19AQI
22AQI
22AQI
23AQI
24AQI
25AQI
23AQI
33AQI
26AQI
24AQI
23AQI
30AQI
29AQI
31AQI
30AQI
35AQI
37AQI
42AQI
37AQI
42AQI
38AQI
39AQI
37AQI
35AQI
37AQI
34AQI
32AQI
43AQI
34AQI
29AQI
34AQI
30AQI
27AQI
26AQI
25AQI
23AQI
26AQI
28AQI
27AQI
25AQI
24AQI
25AQI
25AQI
25AQI
26AQI
25AQI
24AQI
24AQI
32AQI
25AQI
31AQI
31AQI
29AQI
31AQI
26AQI
22AQI
25AQI
29AQI
28AQI
33AQI
31AQI
27AQI
26AQI
27AQI
25AQI
26AQI
27AQI
26AQI
27AQI
28AQI
27AQI
26AQI
30AQI
28AQI
28AQI
26AQI
30AQI
25AQI
24AQI
23AQI
23AQI
21AQI
20AQI
21AQI
20AQI
23AQI
23AQI
22AQI
21AQI
26AQI
25AQI
25AQI
25AQI
29AQI
22AQI
20AQI
16AQI
18AQI
19AQI
23AQI
20AQI
21AQI
20AQI
20AQI
20AQI
20AQI
19AQI
23AQI
26AQI
19AQI
22AQI
22AQI
23AQI
24AQI
24AQI
23AQI
25AQI
23AQI
23AQI
22AQI
23AQI
21AQI
19AQI
20AQI
21AQI
20AQI
22AQI
22AQI
22AQI
22AQI
42AQI
27AQI
29AQI
25AQI
27AQI
27AQI
25AQI
28AQI
23AQI
26AQI
23AQI
23AQI
25AQI
20AQI
19AQI
19AQI
18AQI
21AQI
27AQI
23AQI
22AQI
23AQI
23AQI
25AQI
26AQI
30AQI
30AQI
34AQI
30AQI
30AQI
32AQI
30AQI
34AQI
33AQI
30AQI
27AQI
28AQI
25AQI
25AQI
33AQI
42AQI
33AQI
28AQI
27AQI
29AQI
26AQI
26AQI
27AQI
22AQI
23AQI
27AQI
28AQI
25AQI
23AQI
22AQI
25AQI
22AQI
20AQI
19AQI
20AQI
21AQI
21AQI
19AQI
20AQI
19AQI
24AQI
22AQI
23AQI
24AQI
26AQI
26AQI
26AQI
25AQI
30AQI
35AQI
28AQI
29AQI
27AQI
26AQI
25AQI
23AQI
21AQI
22AQI
20AQI
18AQI
20AQI
19AQI
18AQI
19AQI
20AQI
25AQI
22AQI
21AQI
20AQI
20AQI
19AQI
19AQI
23AQI
24AQI
23AQI
22AQI
24AQI
21AQI
19AQI
22AQI
20AQI
21AQI
20AQI
18AQI
19AQI
20AQI
20AQI
23AQI
26AQI
25AQI
32AQI
27AQI
22AQI
23AQI
26AQI
25AQI
23AQI
21AQI
No. of days
202525AQI
Highest AQI recorded in
February32AQI
Lowest AQI recorded in
September21AQI
202422AQI
Highest AQI recorded in
September32AQI
Lowest AQI recorded in
April8AQI
202317AQI
Highest AQI recorded in
December17AQI
Lowest AQI recorded in
November15AQI
202029AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
May25AQI
Most & Least Polluted Years Over the Last 4 Years
Port Augusta's annual 2025 AQI (25) shows an average percentage change of 16.8% (worsened AQI) compared to previous years: 2020 (29), 2023 (17), 2024 (22).