Huangling County Environmental Protection Bureau, Tongchuanshi, Shaanxi, 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
Huangling County Environmental Protection Bureau, Tongchuanshi, Shaanxi, China
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 52 of Moderate air quality, showing improvement over 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Sep - 19th Sep 2025
Huangling County Environmental Protection Bureau, Tongchuanshi, Shaanxi, China
6 AM18th Sep 2025
7 PM
5 AM19th Sep 2025
59AQI
20AQI
59AQI
34AQI
In the last 24 hours,
Huangling County Environmental Protection Bureau's AQI reached its highest point of 59 at 6 AM during the Day, while the lowest point, 20, was recorded at 1 PM during the Day between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Huangling County Environmental Protection Bureau, Tongchuanshi, Shaanxi, China
26°C21/33°C
21°C19/22°C
23°C18/29°C
19°C17/20°C
21°C15/28°C
23°C18/28°C
23°C20/28°C
20°C19/23°C
18°C17/22°C
16°C14/18°C
18°C14/22°C
20°C16/26°C
22°C17/28°C
20°C18/23°C
19°C17/22°C
19°C18/20°C
16°C14/18°C
17°C12/23°C
19°C14/26°C
21°C17/26°C
21°C16/26°C
19°C17/22°C
18°C17/20°C
20°C16/25°C
21°C16/27°C
22°C18/28°C
22°C18/27°C
21°C19/25°C
15°C12/15°C
13°C12/14°C
--°C/°C
57AQI
49AQI
56AQI
56AQI
2025 Days Vs Air Quality
Huangling County Environmental Protection Bureau, Tongchuanshi, Shaanxi, China
5%
12
72%
187
19%
49
4%
11
0.7%
2
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 5%
Health Risk Level:
Extreme
In 2025, 5% of 262 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.
Annual Air Quality Insights
Huangling County Environmental Protection Bureau, Tongchuanshi, Shaanxi, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
97AQI
93AQI
101AQI
119AQI
95AQI
78AQI
71AQI
67AQI
73AQI
83AQI
74AQI
84AQI
102AQI
71AQI
70AQI
75AQI
89AQI
99AQI
89AQI
93AQI
104AQI
141AQI
162AQI
177AQI
106AQI
97AQI
75AQI
96AQI
122AQI
120AQI
150AQI
155AQI
118AQI
86AQI
81AQI
60AQI
86AQI
65AQI
55AQI
74AQI
85AQI
89AQI
75AQI
80AQI
79AQI
83AQI
84AQI
94AQI
96AQI
113AQI
125AQI
141AQI
107AQI
79AQI
89AQI
95AQI
95AQI
107AQI
114AQI
140AQI
102AQI
83AQI
86AQI
95AQI
110AQI
117AQI
118AQI
115AQI
125AQI
161AQI
153AQI
156AQI
132AQI
84AQI
74AQI
64AQI
61AQI
59AQI
61AQI
74AQI
82AQI
102AQI
267AQI
116AQI
177AQI
143AQI
129AQI
91AQI
91AQI
79AQI
80AQI
73AQI
97AQI
108AQI
83AQI
102AQI
100AQI
105AQI
99AQI
86AQI
153AQI
143AQI
114AQI
80AQI
81AQI
131AQI
120AQI
138AQI
119AQI
111AQI
153AQI
149AQI
114AQI
90AQI
92AQI
87AQI
76AQI
61AQI
73AQI
133AQI
106AQI
114AQI
77AQI
99AQI
190AQI
229AQI
161AQI
128AQI
103AQI
92AQI
74AQI
75AQI
69AQI
88AQI
79AQI
86AQI
144AQI
100AQI
105AQI
92AQI
95AQI
128AQI
87AQI
106AQI
73AQI
72AQI
75AQI
78AQI
84AQI
86AQI
66AQI
70AQI
60AQI
52AQI
56AQI
55AQI
60AQI
66AQI
62AQI
64AQI
65AQI
69AQI
73AQI
75AQI
68AQI
62AQI
66AQI
66AQI
67AQI
63AQI
64AQI
65AQI
62AQI
62AQI
65AQI
61AQI
60AQI
60AQI
57AQI
61AQI
53AQI
55AQI
44AQI
49AQI
51AQI
45AQI
50AQI
50AQI
55AQI
60AQI
61AQI
68AQI
70AQI
69AQI
68AQI
66AQI
61AQI
62AQI
64AQI
67AQI
57AQI
57AQI
64AQI
54AQI
49AQI
52AQI
53AQI
57AQI
57AQI
60AQI
59AQI
59AQI
62AQI
61AQI
64AQI
65AQI
60AQI
60AQI
61AQI
61AQI
54AQI
55AQI
57AQI
58AQI
60AQI
65AQI
61AQI
54AQI
53AQI
54AQI
55AQI
56AQI
54AQI
54AQI
48AQI
51AQI
56AQI
61AQI
56AQI
51AQI
46AQI
53AQI
49AQI
53AQI
59AQI
49AQI
37AQI
56AQI
55AQI
60AQI
61AQI
58AQI
62AQI
54AQI
53AQI
58AQI
62AQI
62AQI
59AQI
50AQI
52AQI
99AQI
93AQI
111AQI
105AQI
102AQI
63AQI
58AQI
57AQI
56AQI
No. of days
202584AQI
Highest AQI recorded in
March111AQI
Lowest AQI recorded in
September56AQI
202482AQI
Highest AQI recorded in
February130AQI
Lowest AQI recorded in
July56AQI
202393AQI
Highest AQI recorded in
March161AQI
Lowest AQI recorded in
September42AQI
202299AQI
Highest AQI recorded in
January141AQI
Lowest AQI recorded in
July59AQI
202194AQI
Highest AQI recorded in
March168AQI
Lowest AQI recorded in
September52AQI
202083AQI
Highest AQI recorded in
November111AQI
Lowest AQI recorded in
August57AQI
Most & Least Polluted Years Over the Last 6 Years
Huangling County Environmental Protection Bureau's annual 2025 AQI (84) shows an average percentage change of -6.5% (improved AQI) compared to previous years: 2020 (83), 2021 (94), 2022 (99), 2023 (93), 2024 (82).