Gretna, New Norfolk, Tasmania, 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
Gretna, New Norfolk, Tasmania, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 27 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Oct - 8th Oct 2025
Gretna, New Norfolk, Tasmania, Australia
6 AM7th Oct 2025
6 PM
5 AM8th Oct 2025
AQI
AQI
38AQI
27AQI
In the last 24 hours,
Gretna's AQI reached its highest point of 38 at 10 PM during the Night, while the lowest point, undefined, was recorded at 9 PM during the Night between 7th Oct and 8th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Gretna, New Norfolk, Tasmania, Australia
10°C3/14°C
5°C2/8°C
5°C1/8°C
6°C2/9°C
9°C8/11°C
10°C7/12°C
11°C6/15°C
15°C12/20°C
10°C7/13°C
6°C3/8°C
8°C3/13°C
8°C5/12°C
4°C1/7°C
6°C3/10°C
5°C2/8°C
8°C6/10°C
7°C4/9°C
5°C2/8°C
5°C3/9°C
6°C4/8°C
6°C0/11°C
6°C-2/13°C
8°C6/9°C
9°C4/16°C
8°C6/12°C
8°C4/10°C
11°C7/16°C
12°C7/19°C
5°C3/8°C
9°C6/11°C
--°C/°C
22AQI
17AQI
25AQI
18AQI
2025 Days Vs Air Quality
Gretna, New Norfolk, Tasmania, Australia
100%
279
Total number of days with different AQI categories in last 281 days in 2025 (84 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 281 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
Gretna, New Norfolk, Tasmania, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
19AQI
19AQI
19AQI
19AQI
19AQI
18AQI
19AQI
19AQI
19AQI
19AQI
19AQI
19AQI
19AQI
20AQI
19AQI
19AQI
19AQI
20AQI
19AQI
20AQI
20AQI
23AQI
20AQI
21AQI
20AQI
19AQI
19AQI
19AQI
19AQI
20AQI
20AQI
20AQI
21AQI
29AQI
20AQI
23AQI
23AQI
21AQI
22AQI
25AQI
20AQI
21AQI
25AQI
34AQI
24AQI
32AQI
21AQI
23AQI
20AQI
21AQI
21AQI
20AQI
20AQI
21AQI
20AQI
20AQI
20AQI
21AQI
21AQI
20AQI
20AQI
23AQI
21AQI
20AQI
21AQI
20AQI
20AQI
21AQI
22AQI
21AQI
21AQI
18AQI
17AQI
15AQI
14AQI
14AQI
14AQI
15AQI
14AQI
15AQI
16AQI
15AQI
18AQI
23AQI
22AQI
18AQI
18AQI
17AQI
21AQI
17AQI
21AQI
20AQI
20AQI
18AQI
15AQI
14AQI
14AQI
12AQI
13AQI
16AQI
17AQI
17AQI
17AQI
17AQI
19AQI
20AQI
20AQI
19AQI
23AQI
19AQI
17AQI
16AQI
27AQI
15AQI
18AQI
14AQI
17AQI
14AQI
17AQI
18AQI
20AQI
24AQI
27AQI
22AQI
21AQI
19AQI
17AQI
16AQI
20AQI
21AQI
19AQI
20AQI
18AQI
19AQI
18AQI
18AQI
20AQI
20AQI
27AQI
24AQI
29AQI
30AQI
24AQI
24AQI
25AQI
19AQI
20AQI
19AQI
21AQI
24AQI
26AQI
22AQI
21AQI
20AQI
27AQI
22AQI
23AQI
17AQI
19AQI
23AQI
28AQI
30AQI
35AQI
36AQI
40AQI
29AQI
31AQI
29AQI
30AQI
30AQI
29AQI
30AQI
25AQI
29AQI
29AQI
33AQI
38AQI
37AQI
35AQI
40AQI
43AQI
39AQI
38AQI
44AQI
46AQI
43AQI
46AQI
40AQI
39AQI
35AQI
34AQI
37AQI
31AQI
33AQI
30AQI
33AQI
25AQI
26AQI
22AQI
22AQI
30AQI
20AQI
18AQI
20AQI
25AQI
21AQI
23AQI
20AQI
22AQI
22AQI
21AQI
28AQI
34AQI
31AQI
30AQI
28AQI
36AQI
22AQI
25AQI
26AQI
23AQI
28AQI
27AQI
30AQI
28AQI
20AQI
21AQI
24AQI
27AQI
20AQI
26AQI
20AQI
25AQI
26AQI
26AQI
25AQI
19AQI
18AQI
20AQI
17AQI
17AQI
15AQI
24AQI
15AQI
18AQI
19AQI
24AQI
26AQI
24AQI
21AQI
22AQI
21AQI
21AQI
20AQI
17AQI
17AQI
15AQI
15AQI
17AQI
14AQI
15AQI
14AQI
14AQI
14AQI
13AQI
15AQI
14AQI
13AQI
11AQI
9AQI
17AQI
25AQI
19AQI
39AQI
46AQI
38AQI
40AQI
27AQI
19AQI
22AQI
19AQI
17AQI
21AQI
29AQI
31AQI
25AQI
17AQI
35AQI
No. of days
202523AQI
Highest AQI recorded in
October35AQI
Lowest AQI recorded in
April17AQI
202411AQI
Highest AQI recorded in
December18AQI
Lowest AQI recorded in
January6AQI
20239AQI
Highest AQI recorded in
April11AQI
Lowest AQI recorded in
March5AQI
202210AQI
Highest AQI recorded in
May17AQI
Lowest AQI recorded in
August4AQI
20219AQI
Highest AQI recorded in
June16AQI
Lowest AQI recorded in
January5AQI
202010AQI
Highest AQI recorded in
March16AQI
Lowest AQI recorded in
December4AQI
Most & Least Polluted Years Over the Last 6 Years
Gretna's annual 2025 AQI (23) shows an average percentage change of 136.5% (worsened AQI) compared to previous years: 2020 (10), 2021 (9), 2022 (10), 2023 (9), 2024 (11).