Osasco, 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!
October Air Quality Analysis
Osasco, State Of Sao Paulo, Brazil
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 78 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Osasco, State Of Sao Paulo, Brazil
6 AM4th Oct 2025
6 PM
5 AM5th Oct 2025
118AQI
72AQI
108AQI
75AQI
In the last 24 hours,
Osasco's AQI reached its highest point of 118 at 5 AM during the Day, while the lowest point, 72, was recorded at 6 AM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Osasco, State Of Sao Paulo, Brazil
22°C16/30°C
16°C14/18°C
17°C15/21°C
22°C16/30°C
24°C16/30°C
20°C15/29°C
22°C13/31°C
18°C13/24°C
17°C14/23°C
18°C13/27°C
20°C12/29°C
20°C15/27°C
19°C15/25°C
19°C14/26°C
22°C14/32°C
26°C18/34°C
26°C20/34°C
22°C18/31°C
17°C15/21°C
16°C14/21°C
15°C13/16°C
15°C11/20°C
17°C10/25°C
21°C13/30°C
23°C17/31°C
25°C17/33°C
23°C17/32°C
21°C17/28°C
22°C17/29°C
22°C17/29°C
--°C/°C
60AQI
60AQI
60AQI
58AQI
2025 Days Vs Air Quality
Osasco, State Of Sao Paulo, Brazil
47%
129
52%
144
1%
4
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 47%
Health Risk Level:
Significant
In 2025, 47% of 278 days were within WHO’s safe air quality limits, and 53% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Osasco, State Of Sao Paulo, Brazil
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
64AQI
61AQI
45AQI
44AQI
40AQI
45AQI
45AQI
44AQI
39AQI
40AQI
46AQI
33AQI
37AQI
37AQI
50AQI
56AQI
51AQI
54AQI
57AQI
56AQI
51AQI
59AQI
49AQI
64AQI
61AQI
54AQI
50AQI
56AQI
52AQI
47AQI
41AQI
35AQI
31AQI
45AQI
47AQI
48AQI
50AQI
57AQI
52AQI
50AQI
57AQI
61AQI
61AQI
57AQI
56AQI
54AQI
47AQI
49AQI
59AQI
49AQI
59AQI
57AQI
41AQI
45AQI
45AQI
54AQI
55AQI
65AQI
60AQI
54AQI
54AQI
48AQI
44AQI
50AQI
58AQI
39AQI
41AQI
52AQI
41AQI
44AQI
48AQI
55AQI
42AQI
36AQI
30AQI
40AQI
50AQI
38AQI
34AQI
41AQI
45AQI
49AQI
49AQI
66AQI
57AQI
53AQI
57AQI
63AQI
60AQI
51AQI
59AQI
61AQI
54AQI
49AQI
29AQI
27AQI
30AQI
42AQI
59AQI
46AQI
44AQI
44AQI
44AQI
33AQI
42AQI
54AQI
56AQI
44AQI
42AQI
27AQI
29AQI
35AQI
43AQI
53AQI
43AQI
38AQI
51AQI
55AQI
40AQI
47AQI
44AQI
45AQI
53AQI
54AQI
53AQI
58AQI
63AQI
72AQI
59AQI
50AQI
28AQI
32AQI
42AQI
40AQI
44AQI
49AQI
58AQI
54AQI
53AQI
72AQI
79AQI
72AQI
31AQI
38AQI
37AQI
54AQI
58AQI
48AQI
33AQI
62AQI
55AQI
84AQI
58AQI
61AQI
55AQI
53AQI
45AQI
50AQI
36AQI
40AQI
31AQI
30AQI
27AQI
37AQI
43AQI
52AQI
63AQI
76AQI
87AQI
86AQI
87AQI
74AQI
74AQI
60AQI
42AQI
72AQI
75AQI
61AQI
51AQI
64AQI
62AQI
37AQI
30AQI
29AQI
33AQI
36AQI
64AQI
51AQI
66AQI
53AQI
51AQI
55AQI
67AQI
57AQI
66AQI
84AQI
109AQI
111AQI
110AQI
69AQI
67AQI
70AQI
90AQI
87AQI
69AQI
70AQI
66AQI
80AQI
56AQI
37AQI
59AQI
48AQI
55AQI
81AQI
95AQI
98AQI
66AQI
36AQI
55AQI
85AQI
41AQI
34AQI
32AQI
43AQI
57AQI
103AQI
57AQI
47AQI
55AQI
71AQI
62AQI
62AQI
80AQI
88AQI
83AQI
81AQI
47AQI
48AQI
47AQI
41AQI
49AQI
44AQI
43AQI
41AQI
46AQI
44AQI
51AQI
86AQI
38AQI
35AQI
49AQI
63AQI
66AQI
70AQI
65AQI
53AQI
44AQI
55AQI
63AQI
53AQI
37AQI
48AQI
80AQI
88AQI
68AQI
50AQI
41AQI
26AQI
26AQI
37AQI
49AQI
82AQI
82AQI
84AQI
70AQI
82AQI
78AQI
49AQI
52AQI
48AQI
44AQI
51AQI
58AQI
64AQI
61AQI
55AQI
79AQI
No. of days
202554AQI
Highest AQI recorded in
October79AQI
Lowest AQI recorded in
April44AQI
202460AQI
Highest AQI recorded in
September101AQI
Lowest AQI recorded in
November40AQI
202355AQI
Highest AQI recorded in
August68AQI
Lowest AQI recorded in
October42AQI
202254AQI
Highest AQI recorded in
July84AQI
Lowest AQI recorded in
November43AQI
202157AQI
Highest AQI recorded in
July76AQI
Lowest AQI recorded in
April40AQI
202058AQI
Highest AQI recorded in
September77AQI
Lowest AQI recorded in
December45AQI
Most & Least Polluted Years Over the Last 6 Years
Osasco's annual 2025 AQI (54) shows an average percentage change of -5.04% (improved AQI) compared to previous years: 2020 (58), 2021 (57), 2022 (54), 2023 (55), 2024 (60).