Sao Paulo, State Of Sao Paulo, Brazil 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
Sao Paulo, State Of Sao Paulo, Brazil
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 50 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Sao Paulo, State Of Sao Paulo, Brazil
6 AM29th Sep 2025
6 PM
5 AM30th Sep 2025
88AQI
61AQI
96AQI
67AQI
In the last 24 hours,
Sao Paulo's AQI reached its highest point of 96 at 2 AM during the Night, while the lowest point, 61, was recorded at 2 PM during the Day between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Sao Paulo, State Of Sao Paulo, Brazil
19°C14/25°C
20°C16/27°C
21°C17/27°C
22°C16/29°C
24°C18/30°C
22°C17/30°C
16°C14/17°C
17°C15/20°C
22°C17/29°C
25°C18/30°C
21°C17/28°C
22°C15/31°C
18°C14/23°C
17°C15/22°C
19°C15/26°C
20°C15/28°C
21°C16/26°C
19°C16/24°C
19°C16/26°C
23°C17/32°C
26°C20/33°C
28°C22/35°C
23°C19/31°C
17°C15/21°C
16°C15/20°C
15°C14/17°C
15°C13/20°C
17°C12/24°C
21°C14/30°C
23°C19/30°C
--°C/°C
52AQI
49AQI
54AQI
48AQI
2025 Days Vs Air Quality
Sao Paulo, State Of Sao Paulo, Brazil
54%
146
45%
121
1%
4
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 54%
Health Risk Level:
Considerable
In 2025, 54% of 273 days were within WHO’s safe air quality limits, and 46% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Sao Paulo, State Of Sao Paulo, Brazil
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
61AQI
47AQI
35AQI
35AQI
37AQI
35AQI
41AQI
37AQI
35AQI
37AQI
41AQI
31AQI
31AQI
30AQI
39AQI
46AQI
37AQI
39AQI
44AQI
39AQI
38AQI
54AQI
43AQI
62AQI
52AQI
41AQI
43AQI
57AQI
44AQI
41AQI
37AQI
30AQI
28AQI
27AQI
37AQI
45AQI
54AQI
58AQI
51AQI
44AQI
50AQI
55AQI
54AQI
53AQI
60AQI
63AQI
46AQI
52AQI
62AQI
49AQI
61AQI
59AQI
46AQI
50AQI
47AQI
55AQI
54AQI
62AQI
62AQI
55AQI
55AQI
51AQI
47AQI
52AQI
61AQI
41AQI
44AQI
54AQI
43AQI
51AQI
53AQI
55AQI
46AQI
33AQI
31AQI
37AQI
43AQI
35AQI
33AQI
38AQI
42AQI
48AQI
40AQI
63AQI
53AQI
48AQI
52AQI
63AQI
58AQI
48AQI
58AQI
59AQI
51AQI
50AQI
28AQI
25AQI
26AQI
39AQI
50AQI
44AQI
43AQI
43AQI
43AQI
31AQI
43AQI
57AQI
57AQI
44AQI
38AQI
26AQI
26AQI
29AQI
40AQI
47AQI
42AQI
38AQI
50AQI
49AQI
37AQI
45AQI
43AQI
43AQI
53AQI
54AQI
51AQI
58AQI
58AQI
61AQI
56AQI
44AQI
27AQI
32AQI
36AQI
34AQI
43AQI
49AQI
54AQI
50AQI
55AQI
65AQI
77AQI
68AQI
33AQI
31AQI
37AQI
51AQI
50AQI
39AQI
27AQI
53AQI
51AQI
80AQI
54AQI
58AQI
46AQI
47AQI
38AQI
48AQI
36AQI
37AQI
33AQI
28AQI
25AQI
31AQI
40AQI
51AQI
59AQI
70AQI
91AQI
88AQI
84AQI
72AQI
72AQI
64AQI
41AQI
68AQI
66AQI
59AQI
51AQI
56AQI
61AQI
35AQI
26AQI
26AQI
28AQI
32AQI
63AQI
50AQI
61AQI
52AQI
49AQI
54AQI
64AQI
57AQI
62AQI
86AQI
112AQI
112AQI
114AQI
70AQI
65AQI
64AQI
93AQI
89AQI
67AQI
67AQI
67AQI
75AQI
53AQI
37AQI
54AQI
43AQI
49AQI
73AQI
87AQI
93AQI
65AQI
37AQI
54AQI
86AQI
39AQI
30AQI
30AQI
38AQI
55AQI
110AQI
57AQI
42AQI
53AQI
72AQI
60AQI
60AQI
78AQI
84AQI
82AQI
76AQI
43AQI
48AQI
47AQI
38AQI
48AQI
41AQI
40AQI
36AQI
32AQI
38AQI
56AQI
87AQI
36AQI
31AQI
43AQI
59AQI
60AQI
66AQI
64AQI
44AQI
41AQI
52AQI
63AQI
53AQI
34AQI
41AQI
81AQI
90AQI
64AQI
51AQI
41AQI
31AQI
30AQI
31AQI
50AQI
42AQI
51AQI
48AQI
42AQI
48AQI
55AQI
62AQI
59AQI
50AQI
No. of days
202551AQI
Highest AQI recorded in
July62AQI
Lowest AQI recorded in
January42AQI
202454AQI
Highest AQI recorded in
September99AQI
Lowest AQI recorded in
January34AQI
202344AQI
Highest AQI recorded in
August53AQI
Lowest AQI recorded in
February37AQI
202244AQI
Highest AQI recorded in
July63AQI
Lowest AQI recorded in
November34AQI
202145AQI
Highest AQI recorded in
August60AQI
Lowest AQI recorded in
April32AQI
202045AQI
Highest AQI recorded in
September59AQI
Lowest AQI recorded in
March35AQI
Most & Least Polluted Years Over the Last 6 Years
Sao Paulo's annual 2025 AQI (51) shows an average percentage change of 10.02% (worsened AQI) compared to previous years: 2020 (45), 2021 (45), 2022 (44), 2023 (44), 2024 (54).