Rancagua Ii, Rancagua, Libertador General Bernardo O Higgins, 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
Rancagua Ii, Rancagua, Libertador General Bernardo O Higgins, Chile
AQI Trends: Highest and Lowest
Same Day Analysis (10th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 61 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 10th Oct - 11th Oct 2025
Rancagua Ii, Rancagua, Libertador General Bernardo O Higgins, Chile
7 AM10th Oct 2025
7 PM
6 AM11th Oct 2025
68AQI
44AQI
55AQI
44AQI
In the last 24 hours,
Rancagua Ii's AQI reached its highest point of 68 at 1 PM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 10th Oct and 11th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Rancagua Ii, Rancagua, Libertador General Bernardo O Higgins, Chile
15°C8/24°C
16°C10/24°C
11°C7/16°C
12°C7/18°C
13°C7/23°C
15°C8/23°C
14°C9/21°C
14°C8/22°C
14°C7/22°C
9°C7/15°C
9°C5/13°C
10°C2/19°C
14°C8/23°C
17°C11/26°C
17°C11/24°C
9°C4/15°C
10°C3/18°C
13°C7/20°C
13°C10/20°C
13°C7/21°C
16°C10/26°C
19°C11/27°C
17°C11/25°C
12°C8/18°C
10°C6/15°C
10°C3/18°C
13°C5/22°C
16°C8/26°C
17°C11/25°C
16°C9/23°C
--°C/°C
64AQI
51AQI
57AQI
53AQI
2025 Days Vs Air Quality
Rancagua Ii, Rancagua, Libertador General Bernardo O Higgins, Chile
29%
83
47%
132
19%
55
5%
13
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 29%
Health Risk Level:
Very high
In 2025, 29% of 284 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Rancagua Ii, Rancagua, Libertador General Bernardo O Higgins, Chile
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
39AQI
41AQI
49AQI
40AQI
41AQI
46AQI
38AQI
35AQI
47AQI
48AQI
54AQI
52AQI
40AQI
42AQI
42AQI
31AQI
37AQI
37AQI
37AQI
46AQI
48AQI
42AQI
39AQI
39AQI
47AQI
55AQI
45AQI
46AQI
61AQI
55AQI
49AQI
50AQI
49AQI
40AQI
45AQI
43AQI
45AQI
55AQI
56AQI
72AQI
54AQI
71AQI
61AQI
67AQI
56AQI
49AQI
42AQI
47AQI
55AQI
55AQI
48AQI
49AQI
46AQI
38AQI
43AQI
43AQI
48AQI
61AQI
40AQI
33AQI
30AQI
35AQI
41AQI
46AQI
41AQI
32AQI
31AQI
38AQI
48AQI
46AQI
58AQI
62AQI
58AQI
46AQI
45AQI
53AQI
57AQI
56AQI
48AQI
51AQI
47AQI
65AQI
65AQI
57AQI
65AQI
64AQI
72AQI
51AQI
29AQI
34AQI
43AQI
54AQI
50AQI
57AQI
63AQI
56AQI
57AQI
61AQI
79AQI
58AQI
42AQI
59AQI
68AQI
60AQI
56AQI
62AQI
61AQI
65AQI
72AQI
74AQI
77AQI
78AQI
85AQI
63AQI
46AQI
53AQI
62AQI
66AQI
76AQI
86AQI
91AQI
75AQI
95AQI
77AQI
83AQI
99AQI
108AQI
48AQI
61AQI
84AQI
97AQI
99AQI
116AQI
95AQI
109AQI
122AQI
91AQI
66AQI
57AQI
83AQI
80AQI
108AQI
131AQI
126AQI
116AQI
56AQI
50AQI
91AQI
108AQI
89AQI
99AQI
143AQI
126AQI
156AQI
142AQI
142AQI
147AQI
145AQI
143AQI
147AQI
147AQI
141AQI
75AQI
92AQI
118AQI
71AQI
42AQI
105AQI
120AQI
135AQI
145AQI
125AQI
112AQI
74AQI
125AQI
117AQI
127AQI
152AQI
136AQI
158AQI
147AQI
164AQI
164AQI
159AQI
161AQI
149AQI
100AQI
98AQI
113AQI
111AQI
133AQI
155AQI
162AQI
167AQI
118AQI
150AQI
117AQI
137AQI
140AQI
156AQI
160AQI
145AQI
135AQI
140AQI
134AQI
106AQI
145AQI
152AQI
141AQI
121AQI
124AQI
60AQI
35AQI
41AQI
83AQI
106AQI
86AQI
85AQI
79AQI
128AQI
115AQI
127AQI
105AQI
85AQI
94AQI
101AQI
58AQI
67AQI
91AQI
73AQI
71AQI
57AQI
40AQI
31AQI
67AQI
70AQI
62AQI
80AQI
98AQI
84AQI
68AQI
73AQI
76AQI
75AQI
59AQI
52AQI
77AQI
82AQI
90AQI
74AQI
71AQI
62AQI
50AQI
61AQI
83AQI
50AQI
51AQI
58AQI
63AQI
64AQI
83AQI
70AQI
36AQI
21AQI
50AQI
67AQI
66AQI
59AQI
39AQI
45AQI
48AQI
44AQI
56AQI
69AQI
62AQI
69AQI
46AQI
37AQI
47AQI
53AQI
60AQI
60AQI
61AQI
44AQI
51AQI
49AQI
63AQI
91AQI
125AQI
136AQI
79AQI
60AQI
56AQI
No. of days
202577AQI
Highest AQI recorded in
July136AQI
Lowest AQI recorded in
January44AQI
202468AQI
Highest AQI recorded in
July127AQI
Lowest AQI recorded in
November37AQI
202371AQI
Highest AQI recorded in
July110AQI
Lowest AQI recorded in
November42AQI
202279AQI
Highest AQI recorded in
June130AQI
Lowest AQI recorded in
January34AQI
202173AQI
Highest AQI recorded in
July155AQI
Lowest AQI recorded in
November38AQI
202081AQI
Highest AQI recorded in
June120AQI
Lowest AQI recorded in
December46AQI
Most & Least Polluted Years Over the Last 6 Years
Rancagua Ii's annual 2025 AQI (77) shows an average percentage change of 4.1% (worsened AQI) compared to previous years: 2020 (81), 2021 (73), 2022 (79), 2023 (71), 2024 (68).