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!
August Air Quality Analysis
Niteroi, Rio de Janeiro, Brazil
AQI Trends: Highest and Lowest
Same Day Analysis (31st August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 27 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Niteroi, Rio de Janeiro, Brazil
60%
128
40%
84
Total number of days with different AQI categories in last 213 days in 2025 (152 days remaining)
Under WHO’s Safe Air Quality Limits: 60%
Health Risk Level:
Moderate
In 2025, 60% of 213 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
Niteroi, Rio de Janeiro, Brazil
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
69AQI
64AQI
64AQI
63AQI
62AQI
67AQI
66AQI
64AQI
64AQI
65AQI
66AQI
66AQI
65AQI
67AQI
66AQI
68AQI
66AQI
69AQI
69AQI
69AQI
68AQI
68AQI
67AQI
66AQI
67AQI
67AQI
64AQI
62AQI
61AQI
61AQI
60AQI
60AQI
61AQI
60AQI
60AQI
60AQI
61AQI
63AQI
64AQI
64AQI
65AQI
74AQI
74AQI
71AQI
69AQI
69AQI
71AQI
74AQI
72AQI
73AQI
71AQI
70AQI
69AQI
68AQI
66AQI
65AQI
64AQI
62AQI
60AQI
59AQI
59AQI
58AQI
57AQI
57AQI
56AQI
55AQI
55AQI
54AQI
53AQI
50AQI
51AQI
50AQI
50AQI
49AQI
47AQI
45AQI
45AQI
45AQI
44AQI
44AQI
46AQI
45AQI
45AQI
47AQI
46AQI
46AQI
46AQI
46AQI
45AQI
45AQI
43AQI
44AQI
44AQI
43AQI
41AQI
40AQI
38AQI
34AQI
33AQI
32AQI
32AQI
32AQI
31AQI
30AQI
29AQI
29AQI
29AQI
27AQI
29AQI
28AQI
28AQI
27AQI
28AQI
28AQI
28AQI
28AQI
28AQI
29AQI
29AQI
29AQI
30AQI
30AQI
32AQI
31AQI
32AQI
32AQI
32AQI
32AQI
32AQI
32AQI
31AQI
30AQI
29AQI
28AQI
28AQI
29AQI
30AQI
28AQI
31AQI
29AQI
32AQI
33AQI
31AQI
30AQI
30AQI
31AQI
32AQI
33AQI
32AQI
35AQI
35AQI
39AQI
37AQI
40AQI
35AQI
37AQI
34AQI
34AQI
32AQI
32AQI
29AQI
26AQI
27AQI
27AQI
27AQI
30AQI
31AQI
36AQI
38AQI
37AQI
37AQI
40AQI
40AQI
38AQI
34AQI
32AQI
31AQI
33AQI
35AQI
35AQI
35AQI
34AQI
31AQI
30AQI
31AQI
28AQI
27AQI
26AQI
28AQI
30AQI
33AQI
34AQI
35AQI
38AQI
43AQI
59AQI
63AQI
66AQI
68AQI
65AQI
59AQI
58AQI
63AQI
62AQI
65AQI
61AQI
57AQI
58AQI
55AQI
48AQI
48AQI
46AQI
65AQI
66AQI
50AQI
32AQI
31AQI
34AQI
47AQI
No. of days
202546AQI
Highest AQI recorded in
February66AQI
Lowest AQI recorded in
May31AQI
202446AQI
Highest AQI recorded in
September66AQI
Lowest AQI recorded in
March25AQI
202328AQI
Highest AQI recorded in
November35AQI
Lowest AQI recorded in
December28AQI
202231AQI
Highest AQI recorded in
October35AQI
Lowest AQI recorded in
December25AQI
Most & Least Polluted Years Over the Last 4 Years
Niteroi's annual 2025 AQI (46) shows an average percentage change of 37.3% (worsened AQI) compared to previous years: 2022 (31), 2023 (28), 2024 (46).
