Katherine, Katherine, Northern Territory, 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
Katherine, Katherine, Northern Territory, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (3rd September ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 27 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Sep - 5th Sep 2025
Katherine, Katherine, Northern Territory, Australia
6 AM4th Sep 2025
6 PM
5 AM5th Sep 2025
AQI
AQI
114AQI
0AQI
In the last 24 hours,
Katherine's AQI reached its highest point of 114 at 9 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 4th Sep and 5th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Katherine, Katherine, Northern Territory, Australia
22°C13/32°C
24°C15/34°C
25°C16/34°C
24°C17/32°C
22°C14/30°C
21°C13/31°C
22°C14/32°C
23°C14/33°C
24°C17/33°C
23°C16/32°C
22°C14/31°C
22°C14/31°C
21°C13/30°C
20°C12/30°C
21°C12/30°C
23°C13/33°C
25°C16/34°C
26°C17/35°C
26°C17/36°C
27°C18/37°C
27°C18/37°C
27°C19/37°C
28°C20/38°C
30°C21/39°C
28°C22/35°C
25°C20/33°C
24°C17/33°C
24°C16/34°C
23°C14/33°C
--°C/°C
--°C/°C
39AQI
26AQI
34AQI
27AQI
2025 Days Vs Air Quality
Katherine, Katherine, Northern Territory, Australia
91%
223
9%
23
Total number of days with different AQI categories in last 247 days in 2025 (118 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 247 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
Katherine, Katherine, Northern Territory, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
40AQI
26AQI
33AQI
32AQI
36AQI
34AQI
34AQI
29AQI
27AQI
24AQI
26AQI
32AQI
34AQI
35AQI
28AQI
30AQI
30AQI
26AQI
38AQI
34AQI
37AQI
36AQI
50AQI
61AQI
39AQI
35AQI
30AQI
30AQI
27AQI
25AQI
27AQI
29AQI
31AQI
31AQI
31AQI
27AQI
27AQI
24AQI
25AQI
27AQI
24AQI
28AQI
34AQI
28AQI
29AQI
28AQI
30AQI
24AQI
32AQI
22AQI
24AQI
23AQI
27AQI
29AQI
28AQI
26AQI
33AQI
30AQI
32AQI
35AQI
26AQI
39AQI
26AQI
27AQI
28AQI
53AQI
35AQI
39AQI
35AQI
34AQI
31AQI
50AQI
31AQI
32AQI
25AQI
29AQI
31AQI
38AQI
35AQI
28AQI
30AQI
36AQI
48AQI
33AQI
47AQI
32AQI
41AQI
30AQI
32AQI
39AQI
28AQI
28AQI
28AQI
30AQI
29AQI
36AQI
27AQI
31AQI
35AQI
41AQI
33AQI
36AQI
19AQI
19AQI
24AQI
25AQI
31AQI
30AQI
26AQI
25AQI
20AQI
21AQI
20AQI
23AQI
25AQI
32AQI
28AQI
35AQI
29AQI
33AQI
26AQI
24AQI
27AQI
29AQI
26AQI
37AQI
33AQI
33AQI
31AQI
29AQI
34AQI
25AQI
29AQI
41AQI
32AQI
41AQI
34AQI
35AQI
40AQI
45AQI
49AQI
39AQI
45AQI
32AQI
38AQI
35AQI
27AQI
26AQI
26AQI
24AQI
28AQI
27AQI
27AQI
27AQI
30AQI
27AQI
30AQI
29AQI
25AQI
34AQI
30AQI
34AQI
34AQI
41AQI
45AQI
47AQI
58AQI
46AQI
50AQI
53AQI
47AQI
50AQI
57AQI
51AQI
48AQI
52AQI
51AQI
41AQI
43AQI
52AQI
51AQI
52AQI
57AQI
57AQI
69AQI
70AQI
61AQI
55AQI
52AQI
52AQI
53AQI
48AQI
47AQI
47AQI
44AQI
51AQI
55AQI
53AQI
49AQI
41AQI
41AQI
38AQI
38AQI
38AQI
50AQI
46AQI
44AQI
40AQI
41AQI
41AQI
40AQI
45AQI
33AQI
29AQI
32AQI
33AQI
32AQI
30AQI
33AQI
37AQI
34AQI
36AQI
29AQI
26AQI
28AQI
32AQI
30AQI
24AQI
25AQI
23AQI
29AQI
29AQI
27AQI
26AQI
27AQI
35AQI
26AQI
26AQI
27AQI
30AQI
30AQI
33AQI
38AQI
33AQI
38AQI
27AQI
33AQI
28AQI
35AQI
28AQI
33AQI
41AQI
49AQI
30AQI
33AQI
No. of days
202535AQI
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
February28AQI
202428AQI
Highest AQI recorded in
December36AQI
Lowest AQI recorded in
February19AQI
202340AQI
Highest AQI recorded in
October70AQI
Lowest AQI recorded in
January12AQI
202244AQI
Highest AQI recorded in
April67AQI
Lowest AQI recorded in
August20AQI
Most & Least Polluted Years Over the Last 4 Years
Katherine's annual 2025 AQI (35) shows an average percentage change of -3.4% (improved AQI) compared to previous years: 2022 (44), 2023 (40), 2024 (28).