Talcahuano, Biobio, Chile Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Talcahuano, Biobio, Chile
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 145 of Poor air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Talcahuano, Biobio, Chile
8 AM2nd Jul 2025
5 PM
7 AM3rd Jul 2025
146AQI
135AQI
165AQI
136AQI
In the last 24 hours,
Talcahuano's AQI reached its highest point of 165 at 10 PM during the Night, while the lowest point, 135, was recorded at 2 PM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Talcahuano, Biobio, Chile
12°C11/13°C
12°C11/15°C
12°C10/15°C
11°C9/13°C
12°C11/13°C
11°C9/13°C
11°C10/14°C
11°C10/14°C
12°C10/13°C
11°C10/12°C
10°C8/11°C
11°C9/12°C
12°C11/13°C
11°C10/12°C
11°C9/12°C
9°C8/12°C
9°C7/12°C
11°C9/13°C
11°C9/12°C
10°C7/11°C
7°C5/10°C
9°C6/11°C
8°C7/10°C
9°C7/10°C
9°C8/11°C
8°C7/10°C
6°C3/9°C
5°C2/9°C
8°C6/11°C
10°C7/13°C
0°C0/0°C
104AQI
85AQI
141AQI
85AQI
2025 Days Vs Air Quality
Talcahuano, Biobio, Chile
51%
94
31%
56
18%
33
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 51%
Health Risk Level:
Considerable
In 2025, 51% of 184 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
Talcahuano, Biobio, Chile
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
46AQI
43AQI
49AQI
29AQI
48AQI
51AQI
35AQI
32AQI
38AQI
47AQI
37AQI
33AQI
43AQI
43AQI
27AQI
27AQI
31AQI
32AQI
35AQI
36AQI
29AQI
28AQI
29AQI
38AQI
35AQI
31AQI
36AQI
47AQI
44AQI
38AQI
34AQI
34AQI
26AQI
32AQI
41AQI
28AQI
38AQI
70AQI
49AQI
49AQI
56AQI
58AQI
57AQI
50AQI
46AQI
44AQI
37AQI
37AQI
53AQI
46AQI
28AQI
32AQI
34AQI
23AQI
32AQI
46AQI
45AQI
32AQI
25AQI
26AQI
26AQI
23AQI
43AQI
30AQI
26AQI
18AQI
31AQI
34AQI
31AQI
47AQI
57AQI
47AQI
54AQI
48AQI
47AQI
47AQI
46AQI
54AQI
42AQI
30AQI
41AQI
59AQI
88AQI
66AQI
87AQI
72AQI
43AQI
31AQI
34AQI
35AQI
37AQI
47AQI
46AQI
53AQI
46AQI
44AQI
75AQI
68AQI
46AQI
31AQI
58AQI
39AQI
61AQI
42AQI
61AQI
56AQI
50AQI
48AQI
76AQI
86AQI
72AQI
33AQI
48AQI
34AQI
46AQI
82AQI
58AQI
67AQI
73AQI
106AQI
50AQI
101AQI
106AQI
61AQI
110AQI
90AQI
61AQI
61AQI
47AQI
70AQI
70AQI
82AQI
126AQI
61AQI
124AQI
71AQI
61AQI
92AQI
94AQI
91AQI
99AQI
107AQI
135AQI
103AQI
87AQI
52AQI
88AQI
105AQI
100AQI
70AQI
89AQI
89AQI
135AQI
130AQI
120AQI
111AQI
111AQI
111AQI
122AQI
139AQI
142AQI
67AQI
54AQI
89AQI
62AQI
48AQI
64AQI
67AQI
113AQI
119AQI
135AQI
93AQI
101AQI
132AQI
115AQI
106AQI
122AQI
137AQI
133AQI
140AQI
128AQI
141AQI
145AQI
37AQI
41AQI
44AQI
56AQI
86AQI
108AQI
143AQI
No. of days
202563AQI
Highest AQI recorded in
July143AQI
Lowest AQI recorded in
January37AQI
202461AQI
Highest AQI recorded in
May109AQI
Lowest AQI recorded in
November33AQI
202358AQI
Highest AQI recorded in
July80AQI
Lowest AQI recorded in
November42AQI
202264AQI
Highest AQI recorded in
May103AQI
Lowest AQI recorded in
November41AQI
202171AQI
Highest AQI recorded in
July116AQI
Lowest AQI recorded in
February43AQI
202067AQI
Highest AQI recorded in
June99AQI
Lowest AQI recorded in
November42AQI
Most & Least Polluted Years Over the Last 6 Years
Talcahuano's annual 2025 AQI (63) shows an average percentage change of -1.2% (improved AQI) compared to previous years: 2020 (67), 2021 (71), 2022 (64), 2023 (58), 2024 (61).