Buenos Aires, Ciudad Autonoma De, Argentina 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
Buenos Aires, Ciudad Autonoma De, Argentina
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 3 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: 29th Sep - 30th Sep 2025
Buenos Aires, Ciudad Autonoma De, Argentina
6 AM29th Sep 2025
6 PM
5 AM30th Sep 2025
68AQI
30AQI
72AQI
40AQI
In the last 24 hours,
Buenos Aires's AQI reached its highest point of 72 at 5 AM during the Night, while the lowest point, 30, was recorded at 1 PM during the Day between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Buenos Aires, Ciudad Autonoma De, Argentina
16°C15/18°C
13°C10/14°C
11°C9/13°C
13°C10/18°C
8°C6/11°C
8°C4/12°C
9°C6/11°C
10°C6/14°C
13°C10/17°C
14°C10/19°C
16°C11/22°C
16°C11/21°C
15°C11/19°C
15°C11/20°C
16°C13/21°C
16°C14/18°C
16°C12/20°C
17°C13/22°C
18°C16/22°C
18°C15/21°C
17°C15/19°C
14°C11/16°C
13°C9/18°C
14°C9/18°C
12°C10/15°C
13°C9/18°C
16°C11/21°C
15°C13/17°C
15°C9/21°C
17°C12/22°C
--°C/°C
42AQI
41AQI
48AQI
43AQI
2025 Days Vs Air Quality
Buenos Aires, Ciudad Autonoma De, Argentina
60%
164
40%
108
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 60%
Health Risk Level:
Moderate
In 2025, 60% of 273 days were within WHO’s safe air quality limits, and 40% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Buenos Aires, Ciudad Autonoma De, Argentina
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
47AQI
47AQI
44AQI
40AQI
47AQI
39AQI
40AQI
38AQI
39AQI
40AQI
39AQI
39AQI
37AQI
39AQI
39AQI
42AQI
39AQI
42AQI
44AQI
43AQI
42AQI
37AQI
40AQI
48AQI
48AQI
53AQI
52AQI
48AQI
47AQI
46AQI
43AQI
43AQI
46AQI
40AQI
42AQI
46AQI
46AQI
50AQI
55AQI
54AQI
52AQI
55AQI
54AQI
54AQI
52AQI
48AQI
51AQI
51AQI
52AQI
51AQI
51AQI
53AQI
51AQI
49AQI
48AQI
49AQI
53AQI
51AQI
48AQI
48AQI
44AQI
44AQI
43AQI
42AQI
38AQI
39AQI
38AQI
40AQI
39AQI
42AQI
43AQI
40AQI
41AQI
42AQI
42AQI
46AQI
42AQI
43AQI
41AQI
43AQI
46AQI
53AQI
50AQI
52AQI
58AQI
56AQI
55AQI
53AQI
48AQI
49AQI
50AQI
53AQI
54AQI
56AQI
45AQI
42AQI
47AQI
48AQI
46AQI
41AQI
39AQI
41AQI
47AQI
41AQI
39AQI
43AQI
42AQI
46AQI
50AQI
48AQI
46AQI
44AQI
43AQI
38AQI
40AQI
51AQI
52AQI
52AQI
52AQI
54AQI
50AQI
52AQI
57AQI
57AQI
59AQI
55AQI
56AQI
49AQI
48AQI
50AQI
48AQI
42AQI
48AQI
44AQI
53AQI
55AQI
53AQI
50AQI
47AQI
52AQI
47AQI
49AQI
48AQI
52AQI
54AQI
42AQI
43AQI
45AQI
45AQI
47AQI
47AQI
49AQI
49AQI
49AQI
48AQI
51AQI
51AQI
49AQI
52AQI
50AQI
53AQI
53AQI
46AQI
54AQI
54AQI
45AQI
42AQI
53AQI
55AQI
51AQI
51AQI
50AQI
53AQI
47AQI
41AQI
46AQI
44AQI
45AQI
47AQI
45AQI
45AQI
41AQI
38AQI
47AQI
45AQI
42AQI
41AQI
55AQI
53AQI
54AQI
49AQI
53AQI
57AQI
55AQI
53AQI
52AQI
52AQI
48AQI
43AQI
49AQI
55AQI
41AQI
49AQI
44AQI
41AQI
40AQI
46AQI
49AQI
60AQI
55AQI
59AQI
52AQI
47AQI
54AQI
75AQI
67AQI
74AQI
68AQI
54AQI
54AQI
47AQI
36AQI
60AQI
66AQI
63AQI
73AQI
54AQI
45AQI
76AQI
69AQI
78AQI
56AQI
56AQI
56AQI
60AQI
61AQI
51AQI
53AQI
61AQI
55AQI
58AQI
77AQI
68AQI
56AQI
52AQI
54AQI
40AQI
68AQI
60AQI
49AQI
51AQI
54AQI
48AQI
54AQI
72AQI
47AQI
54AQI
50AQI
48AQI
44AQI
34AQI
41AQI
33AQI
22AQI
24AQI
24AQI
24AQI
24AQI
20AQI
14AQI
28AQI
61AQI
43AQI
50AQI
45AQI
46AQI
50AQI
49AQI
49AQI
60AQI
43AQI
No. of days
202548AQI
Highest AQI recorded in
August60AQI
Lowest AQI recorded in
January43AQI
202444AQI
Highest AQI recorded in
July55AQI
Lowest AQI recorded in
November35AQI
202329AQI
Highest AQI recorded in
November37AQI
Lowest AQI recorded in
December28AQI
202223AQI
Highest AQI recorded in
February25AQI
Lowest AQI recorded in
March18AQI
202136AQI
Highest AQI recorded in
July58AQI
Lowest AQI recorded in
November28AQI
202035AQI
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
September13AQI
Most & Least Polluted Years Over the Last 6 Years
Buenos Aires's annual 2025 AQI (48) shows an average percentage change of 53.04% (worsened AQI) compared to previous years: 2020 (35), 2021 (36), 2022 (23), 2023 (29), 2024 (44).