St Marys Sydney North West, 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!
August Air Quality Analysis
St Marys Sydney North West, Penrith, New South Wales, Australia
AQI Trends: Highest and Lowest
Same Day Analysis (12th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 20 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Aug - 14th Aug 2025
St Marys Sydney North West, Penrith, New South Wales, Australia
6 AM13th Aug 2025
5 PM
5 AM14th Aug 2025
AQI
AQI
28AQI
13AQI
In the last 24 hours,
St Marys Sydney North West's AQI reached its highest point of 28 at 11 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 13th Aug and 14th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
St Marys Sydney North West, Penrith, New South Wales, Australia
9°C6/14°C
9°C4/16°C
9°C5/15°C
9°C5/16°C
10°C5/17°C
10°C4/18°C
12°C8/18°C
13°C9/19°C
13°C8/19°C
10°C6/17°C
10°C4/17°C
12°C8/19°C
13°C11/15°C
13°C10/16°C
12°C8/17°C
9°C8/10°C
10°C8/13°C
11°C7/15°C
12°C10/14°C
14°C12/15°C
14°C10/18°C
14°C9/22°C
12°C7/19°C
11°C7/15°C
12°C8/17°C
12°C10/17°C
12°C9/17°C
11°C9/16°C
11°C7/17°C
--°C/°C
--°C/°C
27AQI
17AQI
25AQI
16AQI
2025 Days Vs Air Quality
St Marys Sydney North West, Penrith, New South Wales, Australia
100%
224
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 225 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
St Marys Sydney North West, Penrith, New South Wales, Australia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
31AQI
29AQI
29AQI
31AQI
35AQI
31AQI
28AQI
25AQI
25AQI
24AQI
24AQI
30AQI
30AQI
30AQI
26AQI
27AQI
27AQI
29AQI
31AQI
33AQI
34AQI
30AQI
29AQI
29AQI
28AQI
31AQI
34AQI
32AQI
32AQI
31AQI
30AQI
27AQI
25AQI
32AQI
32AQI
34AQI
32AQI
30AQI
26AQI
26AQI
27AQI
27AQI
27AQI
27AQI
23AQI
22AQI
22AQI
24AQI
24AQI
22AQI
25AQI
24AQI
25AQI
26AQI
24AQI
26AQI
28AQI
29AQI
40AQI
34AQI
37AQI
31AQI
31AQI
27AQI
24AQI
22AQI
21AQI
21AQI
20AQI
20AQI
26AQI
29AQI
37AQI
33AQI
32AQI
29AQI
31AQI
31AQI
33AQI
26AQI
26AQI
24AQI
22AQI
22AQI
21AQI
20AQI
19AQI
19AQI
18AQI
18AQI
19AQI
22AQI
24AQI
25AQI
24AQI
23AQI
21AQI
20AQI
24AQI
34AQI
30AQI
29AQI
28AQI
25AQI
25AQI
23AQI
24AQI
32AQI
27AQI
30AQI
23AQI
24AQI
23AQI
23AQI
23AQI
21AQI
21AQI
20AQI
19AQI
19AQI
19AQI
19AQI
18AQI
18AQI
19AQI
19AQI
20AQI
18AQI
18AQI
17AQI
17AQI
18AQI
20AQI
20AQI
19AQI
22AQI
17AQI
16AQI
17AQI
15AQI
18AQI
15AQI
18AQI
18AQI
21AQI
40AQI
21AQI
25AQI
22AQI
26AQI
24AQI
28AQI
30AQI
22AQI
22AQI
26AQI
22AQI
18AQI
16AQI
17AQI
19AQI
23AQI
20AQI
20AQI
24AQI
26AQI
28AQI
30AQI
36AQI
40AQI
37AQI
38AQI
38AQI
30AQI
29AQI
26AQI
25AQI
26AQI
31AQI
27AQI
22AQI
19AQI
17AQI
18AQI
22AQI
21AQI
20AQI
26AQI
22AQI
21AQI
20AQI
22AQI
24AQI
23AQI
30AQI
26AQI
28AQI
25AQI
27AQI
28AQI
26AQI
26AQI
24AQI
28AQI
28AQI
21AQI
20AQI
18AQI
19AQI
19AQI
18AQI
20AQI
19AQI
20AQI
21AQI
23AQI
22AQI
23AQI
22AQI
19AQI
17AQI
18AQI
20AQI
29AQI
27AQI
27AQI
24AQI
20AQI
27AQI
23AQI
20AQI
No. of days
202525AQI
Highest AQI recorded in
January29AQI
Lowest AQI recorded in
May20AQI
202418AQI
Highest AQI recorded in
December32AQI
Lowest AQI recorded in
June11AQI
202315AQI
Highest AQI recorded in
December20AQI
Lowest AQI recorded in
April11AQI
202213AQI
Highest AQI recorded in
January16AQI
Lowest AQI recorded in
May10AQI
202121AQI
Highest AQI recorded in
August27AQI
Lowest AQI recorded in
February15AQI
202027AQI
Highest AQI recorded in
July32AQI
Lowest AQI recorded in
December17AQI
Most & Least Polluted Years Over the Last 6 Years
St Marys Sydney North West's annual 2025 AQI (25) shows an average percentage change of 40.7% (worsened AQI) compared to previous years: 2020 (27), 2021 (21), 2022 (13), 2023 (15), 2024 (18).