Sao Lazaro, Macau, China 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 Lazaro, Macau, China
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Sao Lazaro, Macau, China
6 AM21st Sep 2025
6 PM
5 AM22nd Sep 2025
44AQI
16AQI
41AQI
18AQI
In the last 24 hours,
Sao Lazaro's AQI reached its highest point of 44 at 6 AM during the Day, while the lowest point, 16, was recorded at 5 PM during the Day between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Sao Lazaro, Macau, China
29°C28/31°C
28°C28/30°C
28°C28/30°C
29°C28/30°C
29°C27/30°C
28°C27/29°C
29°C28/31°C
29°C28/29°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
30°C28/31°C
28°C26/30°C
27°C26/28°C
28°C28/29°C
29°C27/30°C
29°C28/30°C
29°C28/31°C
29°C28/30°C
29°C28/30°C
29°C28/31°C
29°C28/30°C
29°C28/31°C
29°C26/31°C
29°C27/31°C
26°C25/27°C
27°C24/29°C
--°C/°C
41AQI
34AQI
41AQI
39AQI
2025 Days Vs Air Quality
Sao Lazaro, Macau, China
42%
111
50%
131
8%
21
0.3%
1
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 42%
Health Risk Level:
Significant
In 2025, 42% of 265 days were within WHO’s safe air quality limits, and 58% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Sao Lazaro, Macau, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
123AQI
147AQI
108AQI
123AQI
130AQI
137AQI
112AQI
127AQI
132AQI
101AQI
102AQI
84AQI
88AQI
84AQI
93AQI
117AQI
94AQI
119AQI
120AQI
123AQI
96AQI
120AQI
94AQI
82AQI
68AQI
62AQI
65AQI
71AQI
97AQI
70AQI
73AQI
64AQI
61AQI
48AQI
61AQI
81AQI
86AQI
66AQI
76AQI
66AQI
74AQI
67AQI
70AQI
90AQI
76AQI
84AQI
105AQI
99AQI
119AQI
81AQI
85AQI
82AQI
81AQI
67AQI
67AQI
97AQI
98AQI
87AQI
78AQI
74AQI
68AQI
62AQI
60AQI
54AQI
48AQI
60AQI
74AQI
69AQI
74AQI
71AQI
64AQI
61AQI
66AQI
52AQI
47AQI
80AQI
77AQI
90AQI
85AQI
94AQI
84AQI
82AQI
79AQI
75AQI
61AQI
60AQI
63AQI
51AQI
44AQI
40AQI
65AQI
60AQI
71AQI
64AQI
56AQI
88AQI
83AQI
90AQI
74AQI
71AQI
61AQI
57AQI
163AQI
136AQI
144AQI
108AQI
93AQI
76AQI
66AQI
58AQI
57AQI
58AQI
54AQI
47AQI
48AQI
50AQI
59AQI
69AQI
62AQI
70AQI
60AQI
71AQI
70AQI
59AQI
58AQI
51AQI
48AQI
57AQI
44AQI
63AQI
58AQI
63AQI
64AQI
57AQI
48AQI
35AQI
34AQI
34AQI
39AQI
33AQI
39AQI
37AQI
37AQI
45AQI
77AQI
70AQI
74AQI
61AQI
55AQI
43AQI
57AQI
59AQI
50AQI
49AQI
44AQI
48AQI
47AQI
37AQI
32AQI
37AQI
33AQI
28AQI
28AQI
25AQI
35AQI
39AQI
39AQI
36AQI
35AQI
33AQI
31AQI
27AQI
22AQI
23AQI
23AQI
23AQI
22AQI
22AQI
22AQI
23AQI
23AQI
22AQI
23AQI
29AQI
33AQI
41AQI
35AQI
46AQI
37AQI
44AQI
47AQI
44AQI
47AQI
51AQI
49AQI
52AQI
51AQI
53AQI
54AQI
60AQI
42AQI
40AQI
47AQI
39AQI
55AQI
50AQI
58AQI
54AQI
59AQI
54AQI
61AQI
56AQI
56AQI
53AQI
56AQI
58AQI
50AQI
48AQI
55AQI
59AQI
54AQI
44AQI
50AQI
49AQI
52AQI
46AQI
38AQI
39AQI
36AQI
33AQI
39AQI
37AQI
39AQI
39AQI
48AQI
41AQI
35AQI
42AQI
47AQI
54AQI
46AQI
42AQI
41AQI
39AQI
38AQI
39AQI
30AQI
29AQI
42AQI
41AQI
33AQI
37AQI
36AQI
36AQI
36AQI
35AQI
33AQI
33AQI
31AQI
37AQI
42AQI
37AQI
46AQI
36AQI
102AQI
79AQI
67AQI
75AQI
53AQI
33AQI
46AQI
46AQI
36AQI
No. of days
202560AQI
Highest AQI recorded in
January102AQI
Lowest AQI recorded in
June33AQI
202461AQI
Highest AQI recorded in
December112AQI
Lowest AQI recorded in
July25AQI
202357AQI
Highest AQI recorded in
December85AQI
Lowest AQI recorded in
July28AQI
202259AQI
Highest AQI recorded in
August108AQI
Lowest AQI recorded in
June25AQI
202161AQI
Highest AQI recorded in
January102AQI
Lowest AQI recorded in
July37AQI
202055AQI
Highest AQI recorded in
December103AQI
Lowest AQI recorded in
July23AQI
Most & Least Polluted Years Over the Last 6 Years
Sao Lazaro's annual 2025 AQI (60) shows an average percentage change of 3.2% (worsened AQI) compared to previous years: 2020 (55), 2021 (61), 2022 (59), 2023 (57), 2024 (61).