Day Street, Sydney, New South Wales, 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
Day Street, Sydney, New South Wales, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (18th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Oct - 19th Oct 2025
Day Street, Sydney, New South Wales, Australia
5 AM18th Oct 2025
6 PM
4 AM19th Oct 2025
AQI
AQI
64AQI
22AQI
In the last 24 hours,
Day Street's AQI reached its highest point of 64 at 3 PM during the Night, while the lowest point, 22, was recorded at 7 PM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Day Street, Sydney, New South Wales, Australia
17°C11/23°C
18°C13/21°C
15°C9/21°C
15°C11/21°C
12°C9/16°C
16°C9/23°C
17°C11/24°C
21°C16/27°C
23°C17/29°C
20°C17/22°C
17°C16/21°C
21°C15/26°C
21°C16/26°C
17°C13/24°C
17°C11/23°C
16°C12/21°C
20°C13/28°C
21°C16/30°C
19°C15/21°C
23°C16/27°C
24°C21/28°C
22°C17/29°C
22°C16/29°C
21°C16/30°C
16°C13/22°C
18°C11/25°C
19°C14/25°C
21°C15/27°C
24°C17/33°C
--°C/°C
--°C/°C
36AQI
30AQI
38AQI
32AQI
2025 Days Vs Air Quality
Day Street, Sydney, New South Wales, Australia
98%
285
2%
6
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 291 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
Day Street, Sydney, New South Wales, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
25AQI
27AQI
24AQI
26AQI
31AQI
22AQI
22AQI
20AQI
20AQI
19AQI
20AQI
24AQI
24AQI
25AQI
23AQI
24AQI
24AQI
22AQI
23AQI
26AQI
36AQI
26AQI
26AQI
24AQI
25AQI
26AQI
32AQI
30AQI
25AQI
23AQI
22AQI
22AQI
20AQI
25AQI
34AQI
30AQI
27AQI
25AQI
24AQI
23AQI
23AQI
24AQI
22AQI
24AQI
21AQI
22AQI
24AQI
25AQI
23AQI
21AQI
21AQI
20AQI
21AQI
28AQI
23AQI
24AQI
22AQI
32AQI
41AQI
30AQI
24AQI
24AQI
23AQI
20AQI
20AQI
19AQI
20AQI
20AQI
18AQI
18AQI
27AQI
29AQI
38AQI
26AQI
27AQI
23AQI
25AQI
30AQI
27AQI
23AQI
21AQI
22AQI
18AQI
21AQI
20AQI
18AQI
16AQI
19AQI
17AQI
18AQI
22AQI
27AQI
28AQI
26AQI
23AQI
21AQI
21AQI
17AQI
20AQI
38AQI
28AQI
26AQI
31AQI
23AQI
22AQI
23AQI
24AQI
28AQI
25AQI
23AQI
20AQI
21AQI
18AQI
20AQI
20AQI
16AQI
19AQI
20AQI
17AQI
17AQI
16AQI
19AQI
17AQI
16AQI
18AQI
15AQI
17AQI
16AQI
15AQI
15AQI
15AQI
17AQI
17AQI
17AQI
18AQI
23AQI
16AQI
16AQI
15AQI
15AQI
14AQI
13AQI
18AQI
18AQI
17AQI
34AQI
15AQI
21AQI
23AQI
26AQI
27AQI
32AQI
25AQI
20AQI
23AQI
20AQI
17AQI
16AQI
15AQI
15AQI
18AQI
22AQI
21AQI
24AQI
29AQI
26AQI
27AQI
29AQI
33AQI
35AQI
37AQI
51AQI
40AQI
32AQI
27AQI
27AQI
26AQI
28AQI
33AQI
32AQI
24AQI
21AQI
18AQI
19AQI
24AQI
22AQI
21AQI
22AQI
22AQI
20AQI
19AQI
23AQI
24AQI
23AQI
23AQI
24AQI
27AQI
30AQI
31AQI
35AQI
33AQI
28AQI
25AQI
23AQI
22AQI
24AQI
22AQI
20AQI
20AQI
21AQI
19AQI
19AQI
21AQI
22AQI
21AQI
21AQI
21AQI
23AQI
22AQI
20AQI
19AQI
19AQI
22AQI
22AQI
20AQI
20AQI
16AQI
16AQI
17AQI
17AQI
16AQI
15AQI
16AQI
15AQI
19AQI
19AQI
23AQI
19AQI
17AQI
16AQI
18AQI
17AQI
21AQI
18AQI
19AQI
18AQI
20AQI
20AQI
21AQI
22AQI
21AQI
23AQI
19AQI
20AQI
20AQI
21AQI
20AQI
22AQI
20AQI
21AQI
22AQI
19AQI
19AQI
20AQI
18AQI
21AQI
33AQI
33AQI
18AQI
28AQI
15AQI
37AQI
28AQI
31AQI
45AQI
40AQI
55AQI
53AQI
30AQI
51AQI
53AQI
51AQI
42AQI
50AQI
46AQI
40AQI
43AQI
45AQI
49AQI
49AQI
25AQI
24AQI
23AQI
23AQI
18AQI
27AQI
24AQI
19AQI
22AQI
45AQI
No. of days
202524AQI
Highest AQI recorded in
October45AQI
Lowest AQI recorded in
May18AQI
202419AQI
Highest AQI recorded in
December29AQI
Lowest AQI recorded in
September9AQI
202316AQI
Highest AQI recorded in
September29AQI
Lowest AQI recorded in
February11AQI
202212AQI
Highest AQI recorded in
December12AQI
Lowest AQI recorded in
October6AQI
Most & Least Polluted Years Over the Last 4 Years
Day Street's annual 2025 AQI (24) shows an average percentage change of 60.1% (worsened AQI) compared to previous years: 2022 (12), 2023 (16), 2024 (19).