Northcpc Taoyuan Refinery F3, Taoyuan District, Taoyuan, Taiwan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Northcpc Taoyuan Refinery F3, Taoyuan District, Taoyuan, Taiwan
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 42 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Northcpc Taoyuan Refinery F3, Taoyuan District, Taoyuan, Taiwan
5 AM19th Sep 2025
6 PM
4 AM20th Sep 2025
79AQI
22AQI
65AQI
42AQI
In the last 24 hours,
Northcpc Taoyuan Refinery F3's AQI reached its highest point of 79 at 4 PM during the Day, while the lowest point, 22, was recorded at 11 AM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Northcpc Taoyuan Refinery F3, Taoyuan District, Taoyuan, Taiwan
30°C27/35°C
30°C27/35°C
30°C27/34°C
30°C27/34°C
31°C27/35°C
30°C27/35°C
29°C26/33°C
30°C26/35°C
30°C26/35°C
29°C26/33°C
30°C27/34°C
29°C27/32°C
29°C27/32°C
29°C26/34°C
29°C27/34°C
30°C26/34°C
30°C27/35°C
29°C27/32°C
29°C26/34°C
29°C27/33°C
29°C27/34°C
29°C26/33°C
29°C26/33°C
30°C26/34°C
29°C27/33°C
30°C26/34°C
30°C26/34°C
30°C27/35°C
30°C26/36°C
29°C27/33°C
--°C/°C
47AQI
42AQI
48AQI
43AQI
2025 Days Vs Air Quality
Northcpc Taoyuan Refinery F3, Taoyuan District, Taoyuan, Taiwan
51%
134
48%
127
0.3%
1
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 51%
Health Risk Level:
Considerable
In 2025, 51% of 263 days were within WHO’s safe air quality limits, and 49% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Northcpc Taoyuan Refinery F3, Taoyuan District, Taoyuan, Taiwan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
80AQI
61AQI
66AQI
56AQI
60AQI
76AQI
71AQI
58AQI
69AQI
58AQI
52AQI
53AQI
55AQI
66AQI
82AQI
58AQI
59AQI
49AQI
57AQI
64AQI
75AQI
90AQI
66AQI
64AQI
65AQI
58AQI
60AQI
59AQI
57AQI
57AQI
56AQI
49AQI
44AQI
45AQI
72AQI
54AQI
48AQI
45AQI
58AQI
47AQI
47AQI
55AQI
78AQI
51AQI
44AQI
52AQI
66AQI
92AQI
53AQI
53AQI
56AQI
36AQI
45AQI
35AQI
64AQI
62AQI
76AQI
113AQI
81AQI
92AQI
72AQI
92AQI
53AQI
47AQI
38AQI
58AQI
51AQI
52AQI
68AQI
79AQI
81AQI
71AQI
63AQI
49AQI
60AQI
70AQI
59AQI
71AQI
64AQI
58AQI
68AQI
72AQI
72AQI
76AQI
80AQI
72AQI
69AQI
49AQI
38AQI
34AQI
40AQI
51AQI
48AQI
63AQI
70AQI
63AQI
70AQI
79AQI
84AQI
71AQI
81AQI
63AQI
88AQI
73AQI
80AQI
82AQI
84AQI
78AQI
70AQI
59AQI
69AQI
61AQI
53AQI
50AQI
44AQI
45AQI
53AQI
56AQI
53AQI
65AQI
65AQI
66AQI
67AQI
66AQI
66AQI
63AQI
54AQI
58AQI
54AQI
44AQI
44AQI
55AQI
57AQI
60AQI
54AQI
53AQI
51AQI
43AQI
43AQI
48AQI
44AQI
52AQI
50AQI
37AQI
64AQI
49AQI
45AQI
38AQI
32AQI
50AQI
55AQI
56AQI
48AQI
40AQI
46AQI
47AQI
48AQI
52AQI
42AQI
48AQI
43AQI
45AQI
29AQI
36AQI
35AQI
39AQI
34AQI
31AQI
39AQI
37AQI
36AQI
39AQI
35AQI
36AQI
42AQI
46AQI
50AQI
41AQI
42AQI
38AQI
43AQI
46AQI
36AQI
43AQI
45AQI
38AQI
35AQI
31AQI
47AQI
47AQI
46AQI
48AQI
52AQI
52AQI
54AQI
48AQI
50AQI
54AQI
42AQI
35AQI
32AQI
31AQI
30AQI
32AQI
32AQI
29AQI
31AQI
39AQI
31AQI
30AQI
37AQI
37AQI
44AQI
41AQI
40AQI
40AQI
45AQI
49AQI
51AQI
57AQI
49AQI
42AQI
42AQI
49AQI
44AQI
40AQI
35AQI
36AQI
37AQI
45AQI
46AQI
40AQI
42AQI
46AQI
46AQI
46AQI
40AQI
41AQI
39AQI
40AQI
36AQI
39AQI
45AQI
52AQI
50AQI
54AQI
56AQI
53AQI
54AQI
45AQI
39AQI
43AQI
44AQI
45AQI
48AQI
47AQI
49AQI
48AQI
44AQI
46AQI
42AQI
42AQI
63AQI
58AQI
64AQI
65AQI
52AQI
41AQI
40AQI
43AQI
47AQI
No. of days
202553AQI
Highest AQI recorded in
April65AQI
Lowest AQI recorded in
July40AQI
202454AQI
Highest AQI recorded in
April78AQI
Lowest AQI recorded in
July31AQI
202352AQI
Highest AQI recorded in
April63AQI
Lowest AQI recorded in
September37AQI
202248AQI
Highest AQI recorded in
March65AQI
Lowest AQI recorded in
May38AQI
202153AQI
Highest AQI recorded in
February71AQI
Lowest AQI recorded in
October40AQI
202051AQI
Highest AQI recorded in
November57AQI
Lowest AQI recorded in
July44AQI
Most & Least Polluted Years Over the Last 6 Years
Northcpc Taoyuan Refinery F3's annual 2025 AQI (53) shows an average percentage change of 2.3% (worsened AQI) compared to previous years: 2020 (51), 2021 (53), 2022 (48), 2023 (52), 2024 (54).