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

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Sambaetiba, Niteroi, Rio de Janeiro, Brazil
5 AM28th Sep 2025
5 PM
4 AM29th Sep 2025
30AQI
13AQI
39AQI
32AQI
In the last 24 hours,
Sambaetiba's AQI reached its highest point of 39 at 12 AM during the Night, while the lowest point, 13, was recorded at 10 AM during the Day between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Sambaetiba, Niteroi, Rio de Janeiro, Brazil
19°C17/20°C
20°C15/27°C
20°C16/26°C
20°C16/26°C
20°C14/29°C
21°C15/31°C
22°C16/33°C
20°C16/26°C
19°C18/21°C
21°C18/26°C
25°C17/36°C
21°C16/27°C
20°C14/29°C
19°C16/25°C
18°C17/19°C
20°C16/25°C
21°C14/30°C
23°C16/33°C
22°C17/28°C
21°C17/30°C
23°C16/33°C
26°C19/36°C
29°C21/39°C
30°C22/41°C
20°C19/21°C
20°C18/24°C
17°C16/18°C
17°C13/22°C
18°C13/24°C
19°C12/28°C
--°C/°C
43AQI
42AQI
43AQI
43AQI
2025 Days Vs Air Quality
Sambaetiba, Niteroi, Rio de Janeiro, Brazil
58%
156
42%
115
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 58%
Health Risk Level:
Considerable
In 2025, 58% of 272 days were within WHO’s safe air quality limits, and 42% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Sambaetiba, Niteroi, Rio de Janeiro, Brazil
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
61AQI
60AQI
60AQI
60AQI
60AQI
61AQI
60AQI
61AQI
63AQI
64AQI
65AQI
67AQI
67AQI
71AQI
70AQI
74AQI
72AQI
76AQI
76AQI
77AQI
75AQI
74AQI
73AQI
71AQI
72AQI
72AQI
68AQI
65AQI
64AQI
62AQI
61AQI
60AQI
61AQI
62AQI
62AQI
61AQI
63AQI
64AQI
65AQI
66AQI
64AQI
67AQI
69AQI
67AQI
66AQI
67AQI
71AQI
73AQI
72AQI
73AQI
72AQI
71AQI
70AQI
70AQI
67AQI
67AQI
65AQI
63AQI
60AQI
60AQI
59AQI
58AQI
57AQI
58AQI
57AQI
56AQI
55AQI
55AQI
54AQI
52AQI
52AQI
51AQI
51AQI
52AQI
48AQI
47AQI
47AQI
46AQI
46AQI
45AQI
46AQI
46AQI
46AQI
48AQI
48AQI
47AQI
47AQI
46AQI
46AQI
46AQI
44AQI
44AQI
44AQI
43AQI
41AQI
40AQI
38AQI
31AQI
30AQI
30AQI
31AQI
32AQI
30AQI
30AQI
27AQI
29AQI
26AQI
24AQI
26AQI
26AQI
24AQI
24AQI
25AQI
26AQI
27AQI
28AQI
28AQI
29AQI
29AQI
29AQI
29AQI
29AQI
30AQI
30AQI
30AQI
31AQI
31AQI
31AQI
31AQI
30AQI
29AQI
27AQI
27AQI
27AQI
27AQI
27AQI
28AQI
26AQI
29AQI
27AQI
30AQI
31AQI
29AQI
28AQI
28AQI
30AQI
32AQI
32AQI
31AQI
34AQI
34AQI
38AQI
37AQI
39AQI
35AQI
36AQI
33AQI
33AQI
32AQI
32AQI
28AQI
26AQI
27AQI
27AQI
27AQI
29AQI
29AQI
33AQI
36AQI
37AQI
38AQI
39AQI
39AQI
37AQI
34AQI
32AQI
30AQI
32AQI
34AQI
35AQI
34AQI
33AQI
30AQI
29AQI
31AQI
29AQI
28AQI
28AQI
29AQI
29AQI
33AQI
35AQI
35AQI
38AQI
41AQI
58AQI
61AQI
62AQI
64AQI
62AQI
55AQI
57AQI
61AQI
56AQI
62AQI
60AQI
55AQI
55AQI
53AQI
44AQI
45AQI
44AQI
50AQI
62AQI
67AQI
64AQI
68AQI
57AQI
54AQI
59AQI
49AQI
43AQI
41AQI
42AQI
52AQI
59AQI
54AQI
52AQI
55AQI
58AQI
56AQI
57AQI
66AQI
74AQI
72AQI
64AQI
56AQI
47AQI
44AQI
50AQI
47AQI
45AQI
46AQI
45AQI
44AQI
42AQI
41AQI
52AQI
47AQI
50AQI
45AQI
51AQI
61AQI
67AQI
66AQI
61AQI
53AQI
49AQI
48AQI
41AQI
33AQI
33AQI
31AQI
32AQI
35AQI
37AQI
25AQI
25AQI
29AQI
20AQI
28AQI
67AQI
66AQI
51AQI
31AQI
30AQI
33AQI
45AQI
55AQI
43AQI
No. of days
202547AQI
Highest AQI recorded in
January67AQI
Lowest AQI recorded in
May30AQI
202443AQI
Highest AQI recorded in
September59AQI
Lowest AQI recorded in
October24AQI
202329AQI
Highest AQI recorded in
November36AQI
Lowest AQI recorded in
December28AQI
202229AQI
Highest AQI recorded in
October36AQI
Lowest AQI recorded in
December23AQI
Most & Least Polluted Years Over the Last 4 Years
Sambaetiba's annual 2025 AQI (47) shows an average percentage change of 43.7% (worsened AQI) compared to previous years: 2022 (29), 2023 (29), 2024 (43).