La Serena, Coquimbo, Chile 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
La Serena, Coquimbo, Chile
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 38 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.
Day & Night AQI Trend: 1st Oct - 2nd Oct 2026
La Serena, Coquimbo, Chile
7 AM1st Oct 2026
7 PM
6 AM2nd Oct 2026
36AQI
21AQI
47AQI
30AQI
In the last 24 hours,
La Serena's AQI reached its highest point of 47 at 10 PM during the Night, while the lowest point, 21, was recorded at 11 AM during the Day between 1st Oct and 2nd Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
La Serena, Coquimbo, Chile
17°C14/21°C
16°C13/20°C
16°C12/21°C
14°C12/18°C
13°C10/16°C
12°C10/14°C
13°C10/17°C
13°C11/14°C
14°C10/18°C
13°C10/17°C
14°C11/17°C
16°C12/20°C
17°C13/21°C
15°C12/19°C
15°C13/16°C
15°C12/20°C
15°C13/17°C
15°C13/19°C
16°C13/20°C
16°C13/21°C
16°C14/21°C
18°C15/22°C
18°C13/22°C
17°C14/21°C
17°C14/21°C
17°C14/19°C
15°C12/18°C
16°C12/19°C
18°C14/22°C
17°C15/19°C
39AQI
29AQI
37AQI
31AQI
2026 Days Vs Air Quality
La Serena, Coquimbo, Chile
82%
224
18%
48
Total number of days with different AQI categories in last 275 days in 2026 (90 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2026, 82% of 275 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
La Serena, Coquimbo, Chile
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
37AQI (US)
27AQI (US)
24AQI (US)
20AQI (US)
28AQI (US)
30AQI (US)
35AQI (US)
28AQI (US)
40AQI (US)
39AQI (US)
36AQI (US)
34AQI (US)
40AQI (US)
30AQI (US)
40AQI (US)
57AQI (US)
54AQI (US)
48AQI (US)
55AQI (US)
50AQI (US)
55AQI (US)
54AQI (US)
53AQI (US)
47AQI (US)
49AQI (US)
46AQI (US)
41AQI (US)
45AQI (US)
46AQI (US)
48AQI (US)
44AQI (US)
46AQI (US)
54AQI (US)
51AQI (US)
51AQI (US)
49AQI (US)
44AQI (US)
41AQI (US)
46AQI (US)
47AQI (US)
42AQI (US)
45AQI (US)
46AQI (US)
53AQI (US)
53AQI (US)
44AQI (US)
44AQI (US)
46AQI (US)
46AQI (US)
47AQI (US)
44AQI (US)
41AQI (US)
35AQI (US)
40AQI (US)
42AQI (US)
42AQI (US)
32AQI (US)
32AQI (US)
32AQI (US)
40AQI (US)
47AQI (US)
42AQI (US)
41AQI (US)
37AQI (US)
33AQI (US)
35AQI (US)
35AQI (US)
38AQI (US)
32AQI (US)
36AQI (US)
38AQI (US)
37AQI (US)
34AQI (US)
33AQI (US)
35AQI (US)
35AQI (US)
34AQI (US)
32AQI (US)
33AQI (US)
32AQI (US)
34AQI (US)
40AQI (US)
36AQI (US)
34AQI (US)
31AQI (US)
32AQI (US)
34AQI (US)
31AQI (US)
29AQI (US)
26AQI (US)
31AQI (US)
34AQI (US)
29AQI (US)
29AQI (US)
31AQI (US)
34AQI (US)
31AQI (US)
37AQI (US)
29AQI (US)
35AQI (US)
35AQI (US)
31AQI (US)
32AQI (US)
34AQI (US)
32AQI (US)
31AQI (US)
35AQI (US)
36AQI (US)
33AQI (US)
29AQI (US)
26AQI (US)
28AQI (US)
31AQI (US)
33AQI (US)
30AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
28AQI (US)
26AQI (US)
24AQI (US)
27AQI (US)
33AQI (US)
35AQI (US)
30AQI (US)
29AQI (US)
33AQI (US)
35AQI (US)
37AQI (US)
36AQI (US)
31AQI (US)
52AQI (US)
53AQI (US)
42AQI (US)
40AQI (US)
54AQI (US)
55AQI (US)
48AQI (US)
53AQI (US)
57AQI (US)
58AQI (US)
72AQI (US)
59AQI (US)
59AQI (US)
47AQI (US)
44AQI (US)
47AQI (US)
42AQI (US)
35AQI (US)
41AQI (US)
56AQI (US)
64AQI (US)
50AQI (US)
48AQI (US)
53AQI (US)
66AQI (US)
52AQI (US)
46AQI (US)
38AQI (US)
58AQI (US)
51AQI (US)
48AQI (US)
60AQI (US)
53AQI (US)
42AQI (US)
20AQI (US)
21AQI (US)
51AQI (US)
36AQI (US)
45AQI (US)
50AQI (US)
63AQI (US)
52AQI (US)
66AQI (US)
69AQI (US)
73AQI (US)
63AQI (US)
56AQI (US)
49AQI (US)
47AQI (US)
48AQI (US)
38AQI (US)
38AQI (US)
51AQI (US)
59AQI (US)
56AQI (US)
55AQI (US)
62AQI (US)
50AQI (US)
45AQI (US)
31AQI (US)
36AQI (US)
40AQI (US)
30AQI (US)
23AQI (US)
30AQI (US)
31AQI (US)
31AQI (US)
29AQI (US)
27AQI (US)
51AQI (US)
46AQI (US)
59AQI (US)
48AQI (US)
38AQI (US)
28AQI (US)
38AQI (US)
33AQI (US)
35AQI (US)
31AQI (US)
31AQI (US)
33AQI (US)
52AQI (US)
38AQI (US)
41AQI (US)
33AQI (US)
26AQI (US)
33AQI (US)
40AQI (US)
31AQI (US)
35AQI (US)
36AQI (US)
27AQI (US)
32AQI (US)
32AQI (US)
19AQI (US)
32AQI (US)
43AQI (US)
54AQI (US)
66AQI (US)
36AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
35AQI (US)
25AQI (US)
29AQI (US)
30AQI (US)
32AQI (US)
24AQI (US)
29AQI (US)
33AQI (US)
30AQI (US)
45AQI (US)
50AQI (US)
38AQI (US)
31AQI (US)
27AQI (US)
26AQI (US)
28AQI (US)
31AQI (US)
34AQI (US)
38AQI (US)
32AQI (US)
40AQI (US)
44AQI (US)
37AQI (US)
27AQI (US)
28AQI (US)
32AQI (US)
32AQI (US)
39AQI (US)
38AQI (US)
31AQI (US)
34AQI (US)
34AQI (US)
30AQI (US)
33AQI (US)
32AQI (US)
31AQI (US)
31AQI (US)
38AQI (US)
41AQI (US)
44AQI (US)
35AQI (US)
31AQI (US)
43AQI (US)
51AQI (US)
41AQI (US)
34AQI (US)
34AQI (US)
35AQI (US)
No. of days
202639AQI (US)
Highest AQI (US) recorded in
June51AQI (US)
Lowest AQI (US) recorded in
April31AQI (US)
202550AQI (US)
Highest AQI (US) recorded in
June67AQI (US)
Lowest AQI (US) recorded in
January36AQI (US)
202437AQI (US)
Highest AQI (US) recorded in
July58AQI (US)
Lowest AQI (US) recorded in
March20AQI (US)
202340AQI (US)
Highest AQI (US) recorded in
February62AQI (US)
Lowest AQI (US) recorded in
December18AQI (US)
202242AQI (US)
Highest AQI (US) recorded in
May55AQI (US)
Lowest AQI (US) recorded in
November29AQI (US)
202145AQI (US)
Highest AQI (US) recorded in
July74AQI (US)
Lowest AQI (US) recorded in
February30AQI (US)
202043AQI (US)
Highest AQI (US) recorded in
June55AQI (US)
Lowest AQI (US) recorded in
March26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
La Serena's annual 2026 AQI (US) (39) shows an average percentage change of -8.1% (improved AQI (US)) compared to previous years: 2020 (43), 2021 (45), 2022 (42), 2023 (40), 2024 (37), 2025 (50).