Sydney Penrith, Penrith, 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
Sydney Penrith, Penrith, New South Wales, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (19th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Oct - 20th Oct 2025
Sydney Penrith, Penrith, New South Wales, Australia
5 AM19th Oct 2025
6 PM
4 AM20th Oct 2025
AQI
AQI
57AQI
37AQI
In the last 24 hours,
Sydney Penrith's AQI reached its highest point of 57 at 1 AM during the Night, while the lowest point, 37, was recorded at 12 AM during the Night between 19th Oct and 20th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Sydney Penrith, Penrith, New South Wales, Australia
17°C9/21°C
14°C7/22°C
14°C8/22°C
12°C6/19°C
15°C7/26°C
17°C9/25°C
21°C14/27°C
22°C15/30°C
20°C15/28°C
18°C14/24°C
21°C13/32°C
20°C13/26°C
16°C11/25°C
17°C8/26°C
16°C9/25°C
21°C11/32°C
22°C16/31°C
20°C15/26°C
24°C14/33°C
24°C19/29°C
22°C15/31°C
22°C13/31°C
20°C13/31°C
16°C9/25°C
18°C8/30°C
19°C10/30°C
22°C12/35°C
25°C17/35°C
19°C15/27°C
--°C/°C
--°C/°C
39AQI
34AQI
35AQI
33AQI
2025 Days Vs Air Quality
Sydney Penrith, Penrith, New South Wales, Australia
99%
289
1%
3
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 292 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
Sydney Penrith, Penrith, New South Wales, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
28AQI
27AQI
26AQI
30AQI
36AQI
25AQI
26AQI
21AQI
20AQI
22AQI
23AQI
30AQI
32AQI
31AQI
25AQI
27AQI
26AQI
27AQI
26AQI
32AQI
35AQI
28AQI
26AQI
26AQI
26AQI
30AQI
34AQI
34AQI
27AQI
26AQI
24AQI
21AQI
22AQI
29AQI
32AQI
34AQI
29AQI
31AQI
24AQI
23AQI
24AQI
26AQI
25AQI
28AQI
24AQI
21AQI
25AQI
26AQI
26AQI
25AQI
25AQI
24AQI
24AQI
33AQI
24AQI
27AQI
31AQI
30AQI
43AQI
37AQI
35AQI
27AQI
27AQI
24AQI
22AQI
21AQI
20AQI
19AQI
19AQI
20AQI
26AQI
30AQI
34AQI
26AQI
27AQI
24AQI
27AQI
30AQI
29AQI
24AQI
23AQI
21AQI
20AQI
21AQI
19AQI
20AQI
17AQI
19AQI
18AQI
18AQI
23AQI
27AQI
31AQI
29AQI
24AQI
23AQI
18AQI
19AQI
40AQI
50AQI
35AQI
36AQI
38AQI
25AQI
28AQI
27AQI
24AQI
36AQI
28AQI
33AQI
29AQI
24AQI
22AQI
24AQI
26AQI
19AQI
20AQI
23AQI
17AQI
21AQI
18AQI
20AQI
20AQI
19AQI
21AQI
19AQI
24AQI
20AQI
19AQI
16AQI
16AQI
17AQI
23AQI
22AQI
21AQI
23AQI
19AQI
19AQI
18AQI
14AQI
19AQI
16AQI
19AQI
20AQI
21AQI
42AQI
22AQI
29AQI
25AQI
28AQI
28AQI
32AQI
31AQI
25AQI
23AQI
28AQI
23AQI
17AQI
17AQI
18AQI
22AQI
23AQI
21AQI
22AQI
29AQI
30AQI
33AQI
33AQI
39AQI
42AQI
44AQI
52AQI
48AQI
35AQI
32AQI
29AQI
30AQI
29AQI
32AQI
31AQI
25AQI
21AQI
17AQI
18AQI
24AQI
22AQI
21AQI
24AQI
25AQI
22AQI
20AQI
22AQI
24AQI
23AQI
29AQI
25AQI
26AQI
29AQI
29AQI
32AQI
30AQI
29AQI
25AQI
24AQI
27AQI
23AQI
22AQI
20AQI
22AQI
22AQI
20AQI
19AQI
19AQI
19AQI
21AQI
23AQI
22AQI
24AQI
23AQI
20AQI
19AQI
19AQI
20AQI
20AQI
19AQI
19AQI
17AQI
15AQI
17AQI
16AQI
15AQI
14AQI
17AQI
17AQI
19AQI
20AQI
21AQI
19AQI
17AQI
15AQI
17AQI
17AQI
20AQI
19AQI
18AQI
22AQI
25AQI
21AQI
23AQI
21AQI
22AQI
21AQI
18AQI
19AQI
19AQI
19AQI
19AQI
21AQI
19AQI
21AQI
19AQI
17AQI
18AQI
21AQI
17AQI
17AQI
26AQI
29AQI
27AQI
32AQI
19AQI
27AQI
25AQI
29AQI
37AQI
44AQI
41AQI
50AQI
42AQI
45AQI
42AQI
37AQI
41AQI
30AQI
29AQI
42AQI
47AQI
52AQI
56AQI
49AQI
44AQI
28AQI
26AQI
25AQI
27AQI
21AQI
30AQI
24AQI
19AQI
21AQI
41AQI
No. of days
202526AQI
Highest AQI recorded in
October41AQI
Lowest AQI recorded in
August19AQI
202429AQI
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
January26AQI
202330AQI
Highest AQI recorded in
September36AQI
Lowest AQI recorded in
November24AQI
202225AQI
Highest AQI recorded in
June36AQI
Lowest AQI recorded in
August15AQI
Most & Least Polluted Years Over the Last 4 Years
Sydney Penrith's annual 2025 AQI (26) shows an average percentage change of -8.1% (improved AQI) compared to previous years: 2022 (25), 2023 (30), 2024 (29).