Melbourne Cbd, Melbourn, Victoria, 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
Melbourne Cbd, Melbourn, Victoria, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (7th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 34 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
Melbourne Cbd, Melbourn, Victoria, Australia
6 AM7th Oct 2025
6 PM
5 AM8th Oct 2025
AQI
AQI
42AQI
14AQI
In the last 24 hours,
Melbourne Cbd's AQI reached its highest point of 42 at 11 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
Melbourne Cbd, Melbourn, Victoria, Australia
14°C11/17°C
11°C8/14°C
10°C7/13°C
11°C8/13°C
11°C8/16°C
13°C10/17°C
15°C10/20°C
18°C12/24°C
14°C10/16°C
11°C9/14°C
13°C7/18°C
15°C8/22°C
10°C7/13°C
12°C9/15°C
10°C7/13°C
12°C7/16°C
12°C10/15°C
13°C11/16°C
15°C11/21°C
12°C8/17°C
11°C8/15°C
14°C7/21°C
15°C11/19°C
12°C8/16°C
11°C9/15°C
13°C10/17°C
16°C9/22°C
20°C15/27°C
12°C9/15°C
13°C7/19°C
--°C/°C
30AQI
22AQI
26AQI
22AQI
2025 Days Vs Air Quality
Melbourne Cbd, Melbourn, Victoria, Australia
99%
276
1%
4
Total number of days with different AQI categories in last 281 days in 2025 (84 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% 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
Melbourne Cbd, Melbourn, Victoria, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
28AQI
37AQI
30AQI
30AQI
28AQI
28AQI
29AQI
26AQI
37AQI
27AQI
32AQI
31AQI
30AQI
28AQI
25AQI
31AQI
30AQI
29AQI
35AQI
39AQI
27AQI
34AQI
24AQI
31AQI
25AQI
35AQI
29AQI
32AQI
24AQI
26AQI
41AQI
29AQI
42AQI
39AQI
54AQI
47AQI
56AQI
55AQI
35AQI
37AQI
31AQI
35AQI
32AQI
29AQI
29AQI
27AQI
26AQI
26AQI
22AQI
25AQI
30AQI
30AQI
31AQI
25AQI
32AQI
31AQI
34AQI
27AQI
35AQI
26AQI
32AQI
34AQI
41AQI
46AQI
42AQI
33AQI
32AQI
31AQI
34AQI
33AQI
31AQI
34AQI
40AQI
29AQI
31AQI
28AQI
33AQI
24AQI
26AQI
25AQI
26AQI
25AQI
28AQI
26AQI
27AQI
33AQI
37AQI
29AQI
28AQI
29AQI
39AQI
32AQI
33AQI
30AQI
26AQI
25AQI
22AQI
27AQI
29AQI
27AQI
39AQI
34AQI
31AQI
33AQI
30AQI
37AQI
36AQI
38AQI
32AQI
30AQI
26AQI
26AQI
31AQI
30AQI
28AQI
23AQI
22AQI
21AQI
19AQI
21AQI
26AQI
30AQI
31AQI
24AQI
27AQI
24AQI
28AQI
24AQI
26AQI
30AQI
27AQI
38AQI
38AQI
32AQI
29AQI
23AQI
21AQI
21AQI
25AQI
35AQI
35AQI
47AQI
25AQI
29AQI
24AQI
23AQI
23AQI
26AQI
22AQI
24AQI
34AQI
33AQI
26AQI
27AQI
25AQI
22AQI
20AQI
20AQI
23AQI
21AQI
28AQI
31AQI
33AQI
36AQI
27AQI
24AQI
23AQI
24AQI
24AQI
30AQI
35AQI
52AQI
35AQI
35AQI
31AQI
35AQI
35AQI
41AQI
34AQI
34AQI
30AQI
27AQI
33AQI
30AQI
27AQI
37AQI
38AQI
25AQI
26AQI
24AQI
28AQI
28AQI
21AQI
23AQI
24AQI
24AQI
23AQI
28AQI
23AQI
28AQI
26AQI
21AQI
23AQI
22AQI
20AQI
19AQI
21AQI
22AQI
23AQI
24AQI
22AQI
24AQI
29AQI
27AQI
24AQI
25AQI
25AQI
26AQI
29AQI
40AQI
37AQI
29AQI
24AQI
27AQI
22AQI
22AQI
20AQI
21AQI
22AQI
22AQI
19AQI
20AQI
20AQI
20AQI
25AQI
23AQI
20AQI
19AQI
18AQI
17AQI
22AQI
19AQI
21AQI
19AQI
21AQI
23AQI
21AQI
22AQI
23AQI
21AQI
22AQI
21AQI
24AQI
22AQI
21AQI
20AQI
21AQI
21AQI
21AQI
21AQI
20AQI
20AQI
18AQI
23AQI
21AQI
22AQI
28AQI
21AQI
25AQI
21AQI
31AQI
25AQI
19AQI
27AQI
42AQI
41AQI
31AQI
34AQI
34AQI
30AQI
34AQI
32AQI
30AQI
28AQI
30AQI
25AQI
24AQI
22AQI
33AQI
No. of days
202528AQI
Highest AQI recorded in
February34AQI
Lowest AQI recorded in
September22AQI
202430AQI
Highest AQI recorded in
May43AQI
Lowest AQI recorded in
July21AQI
202330AQI
Highest AQI recorded in
October33AQI
Lowest AQI recorded in
June25AQI
202231AQI
Highest AQI recorded in
March36AQI
Lowest AQI recorded in
August25AQI
202128AQI
Highest AQI recorded in
May34AQI
Lowest AQI recorded in
September25AQI
202027AQI
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
December21AQI
Most & Least Polluted Years Over the Last 6 Years
Melbourne Cbd's annual 2025 AQI (28) shows an average percentage change of -2.6% (improved AQI) compared to previous years: 2020 (27), 2021 (28), 2022 (31), 2023 (30), 2024 (30).