City Environmental Monitoring Station, Weihai, Shandong, China 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
City Environmental Monitoring Station, Weihai, Shandong, China
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 33 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
City Environmental Monitoring Station, Weihai, Shandong, China
5 AM3rd Oct 2025
5 PM
4 AM4th Oct 2025
AQI
AQI
48AQI
29AQI
In the last 24 hours,
City Environmental Monitoring Station's AQI reached its highest point of 48 at 9 PM during the Night, while the lowest point, 29, was recorded at 7 PM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
City Environmental Monitoring Station, Weihai, Shandong, China
24°C22/25°C
26°C24/27°C
25°C24/25°C
24°C22/27°C
23°C21/26°C
24°C21/26°C
24°C21/27°C
24°C22/27°C
23°C22/26°C
23°C22/25°C
24°C21/28°C
25°C23/28°C
24°C21/27°C
20°C17/21°C
22°C21/22°C
18°C16/20°C
21°C19/22°C
22°C21/23°C
22°C19/23°C
21°C20/21°C
21°C20/22°C
22°C20/24°C
22°C21/24°C
22°C21/23°C
20°C16/22°C
22°C20/23°C
21°C19/25°C
23°C20/26°C
20°C18/23°C
--°C/°C
--°C/°C
62AQI
49AQI
62AQI
48AQI
2025 Days Vs Air Quality
City Environmental Monitoring Station, Weihai, Shandong, China
26%
73
65%
180
8%
22
0.3%
1
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 26%
Health Risk Level:
Very high
In 2025, 26% of 276 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
City Environmental Monitoring Station, Weihai, Shandong, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
83AQI
53AQI
59AQI
88AQI
143AQI
53AQI
70AQI
40AQI
43AQI
41AQI
59AQI
73AQI
120AQI
89AQI
63AQI
76AQI
74AQI
118AQI
144AQI
86AQI
151AQI
67AQI
83AQI
61AQI
87AQI
97AQI
60AQI
57AQI
79AQI
60AQI
69AQI
72AQI
96AQI
51AQI
53AQI
42AQI
59AQI
36AQI
41AQI
50AQI
87AQI
60AQI
62AQI
76AQI
105AQI
78AQI
89AQI
48AQI
60AQI
49AQI
55AQI
53AQI
43AQI
43AQI
59AQI
104AQI
109AQI
128AQI
144AQI
115AQI
120AQI
67AQI
63AQI
53AQI
72AQI
88AQI
127AQI
138AQI
120AQI
89AQI
138AQI
78AQI
82AQI
76AQI
63AQI
70AQI
64AQI
86AQI
78AQI
66AQI
78AQI
86AQI
110AQI
115AQI
128AQI
89AQI
56AQI
50AQI
63AQI
86AQI
100AQI
81AQI
89AQI
71AQI
76AQI
62AQI
103AQI
63AQI
75AQI
73AQI
64AQI
64AQI
51AQI
43AQI
62AQI
79AQI
105AQI
71AQI
79AQI
71AQI
61AQI
56AQI
59AQI
50AQI
49AQI
70AQI
79AQI
61AQI
74AQI
76AQI
72AQI
53AQI
51AQI
54AQI
44AQI
51AQI
63AQI
55AQI
59AQI
63AQI
66AQI
76AQI
75AQI
76AQI
72AQI
62AQI
62AQI
61AQI
83AQI
89AQI
66AQI
107AQI
76AQI
82AQI
79AQI
86AQI
99AQI
72AQI
76AQI
81AQI
77AQI
74AQI
64AQI
44AQI
43AQI
60AQI
69AQI
67AQI
64AQI
50AQI
53AQI
50AQI
40AQI
36AQI
40AQI
51AQI
55AQI
53AQI
60AQI
46AQI
50AQI
59AQI
51AQI
53AQI
56AQI
55AQI
63AQI
65AQI
71AQI
57AQI
49AQI
53AQI
49AQI
60AQI
63AQI
61AQI
59AQI
57AQI
46AQI
65AQI
66AQI
59AQI
55AQI
60AQI
50AQI
50AQI
53AQI
51AQI
48AQI
45AQI
39AQI
38AQI
36AQI
32AQI
47AQI
46AQI
50AQI
50AQI
44AQI
35AQI
36AQI
43AQI
54AQI
56AQI
51AQI
47AQI
47AQI
44AQI
46AQI
49AQI
39AQI
43AQI
50AQI
48AQI
50AQI
49AQI
44AQI
44AQI
53AQI
58AQI
55AQI
56AQI
52AQI
54AQI
62AQI
56AQI
58AQI
51AQI
55AQI
49AQI
53AQI
46AQI
46AQI
53AQI
64AQI
61AQI
45AQI
53AQI
48AQI
53AQI
59AQI
69AQI
65AQI
66AQI
57AQI
55AQI
54AQI
49AQI
50AQI
41AQI
36AQI
38AQI
41AQI
43AQI
37AQI
33AQI
45AQI
88AQI
110AQI
75AQI
76AQI
82AQI
69AQI
80AQI
62AQI
33AQI
79AQI
70AQI
88AQI
71AQI
71AQI
55AQI
50AQI
50AQI
57AQI
58AQI
No. of days
202565AQI
Highest AQI recorded in
March88AQI
Lowest AQI recorded in
July50AQI
202467AQI
Highest AQI recorded in
March90AQI
Lowest AQI recorded in
September46AQI
202373AQI
Highest AQI recorded in
March97AQI
Lowest AQI recorded in
November55AQI
202270AQI
Highest AQI recorded in
August116AQI
Lowest AQI recorded in
September54AQI
202176AQI
Highest AQI recorded in
March115AQI
Lowest AQI recorded in
September59AQI
202071AQI
Highest AQI recorded in
April96AQI
Lowest AQI recorded in
August58AQI
Most & Least Polluted Years Over the Last 6 Years
City Environmental Monitoring Station's annual 2025 AQI (65) shows an average percentage change of -8.06% (improved AQI) compared to previous years: 2020 (71), 2021 (76), 2022 (70), 2023 (73), 2024 (67).