Country Background
HistoryAQIPM2.5PM10COSO2NO2O3

Lengshuitan District Environmental Protection Bureau, Yongzhou, Hunan, China Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

September Air Quality Analysis

Lengshuitan District Environmental Protection Bureau, Yongzhou, Hunan, China

2021
2022
2023
2024
2025
AQI
.
Days

AQI Trends: Highest and Lowest

Highest AQI recorded on
30th Sep 2023
152AQI
Lowest AQI recorded on
26th Sep 2025
32AQI

Same Day Analysis (30th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 141 of Poor air quality, showing improvement over 2023 on the same day.

Download 2024 Annual Data

World Air Quality Report

Globe

2025 Days Vs Air Quality

Lengshuitan District Environmental Protection Bureau, Yongzhou, Hunan, China

2025

11%

29

61%

166

20%

55

7%

19

1%

3

0.3%

1

Total number of days with different AQI categories in last 274 days in 2025 (91 days remaining)

Good
29 Days
Moderate
166 Days
Poor
55 Days
Unhealthy
19 Days
Severe
3 Days
Hazardous
1 Days

Under WHO’s Safe Air Quality Limits: 11%

Health Risk Level:

Extreme

In 2025, 11% of 274 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

Lengshuitan District Environmental Protection Bureau, Yongzhou, Hunan, China

AQI levels in 2025

AQI
PM2.5
PM10
CO
SO2
NO2
O3
Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

-1th undefined 2025
-1th undefined 2025
-1th undefined 2025
1st January 2025
173AQI
2nd January 2025
166AQI
3rd January 2025
173AQI
4th January 2025
180AQI
5th January 2025
188AQI
6th January 2025
161AQI
7th January 2025
166AQI
8th January 2025
156AQI
9th January 2025
128AQI
10th January 2025
115AQI
11th January 2025
124AQI
12th January 2025
126AQI
13th January 2025
124AQI
14th January 2025
133AQI
15th January 2025
126AQI
16th January 2025
122AQI
17th January 2025
136AQI
18th January 2025
145AQI
19th January 2025
146AQI
20th January 2025
160AQI
21st January 2025
159AQI
22nd January 2025
168AQI
23rd January 2025
174AQI
24th January 2025
233AQI
25th January 2025
93AQI
26th January 2025
108AQI
27th January 2025
93AQI
28th January 2025
135AQI
29th January 2025
229AQI
30th January 2025
165AQI
31st January 2025
154AQI
1st February 2025
100AQI
2nd February 2025
91AQI
3rd February 2025
119AQI
4th February 2025
107AQI
5th February 2025
129AQI
6th February 2025
118AQI
7th February 2025
107AQI
8th February 2025
74AQI
9th February 2025
88AQI
10th February 2025
100AQI
11th February 2025
122AQI
12th February 2025
124AQI
13th February 2025
148AQI
14th February 2025
157AQI
15th February 2025
155AQI
16th February 2025
111AQI
17th February 2025
114AQI
18th February 2025
103AQI
19th February 2025
82AQI
20th February 2025
66AQI
21st February 2025
135AQI
22nd February 2025
60AQI
23rd February 2025
121AQI
24th February 2025
130AQI
25th February 2025
149AQI
26th February 2025
145AQI
27th February 2025
102AQI
28th February 2025
108AQI
1st March 2025
81AQI
2nd March 2025
85AQI
3rd March 2025
57AQI
4th March 2025
63AQI
5th March 2025
57AQI
6th March 2025
89AQI
7th March 2025
100AQI
8th March 2025
107AQI
9th March 2025
123AQI
10th March 2025
94AQI
11th March 2025
96AQI
12th March 2025
100AQI
13th March 2025
114AQI
14th March 2025
76AQI
15th March 2025
73AQI
16th March 2025
77AQI
17th March 2025
75AQI
18th March 2025
80AQI
19th March 2025
86AQI
20th March 2025
94AQI
21st March 2025
100AQI
22nd March 2025
113AQI
23rd March 2025
136AQI
24th March 2025
136AQI
25th March 2025
150AQI
26th March 2025
147AQI
27th March 2025
145AQI
28th March 2025
96AQI
29th March 2025
94AQI
30th March 2025
61AQI
31st March 2025
89AQI
1st April 2025
87AQI
2nd April 2025
95AQI
3rd April 2025
109AQI
4th April 2025
143AQI
5th April 2025
144AQI
6th April 2025
153AQI
7th April 2025
152AQI
8th April 2025
149AQI
9th April 2025
149AQI
10th April 2025
109AQI
11th April 2025
123AQI
12th April 2025
440AQI
13th April 2025
227AQI
14th April 2025
165AQI
15th April 2025
146AQI
16th April 2025
142AQI
17th April 2025
128AQI
18th April 2025
130AQI
19th April 2025
84AQI
20th April 2025
88AQI
21st April 2025
78AQI
22nd April 2025
76AQI
23rd April 2025
84AQI
24th April 2025
74AQI
25th April 2025
76AQI
26th April 2025
80AQI
27th April 2025
61AQI
28th April 2025
84AQI
29th April 2025
92AQI
30th April 2025
105AQI
1st May 2025
89AQI
2nd May 2025
90AQI
3rd May 2025
91AQI
4th May 2025
97AQI
5th May 2025
75AQI
6th May 2025
97AQI
7th May 2025
103AQI
8th May 2025
81AQI
9th May 2025
73AQI
10th May 2025
84AQI
11th May 2025
77AQI
12th May 2025
77AQI
13th May 2025
84AQI
14th May 2025
85AQI
15th May 2025
118AQI
16th May 2025
68AQI
17th May 2025
86AQI
18th May 2025
66AQI
19th May 2025
67AQI
20th May 2025
56AQI
21st May 2025
59AQI
22nd May 2025
60AQI
23rd May 2025
69AQI
24th May 2025
97AQI
25th May 2025
97AQI
26th May 2025
85AQI
27th May 2025
82AQI
28th May 2025
57AQI
29th May 2025
61AQI
30th May 2025
62AQI
31st May 2025
56AQI
1st June 2025
60AQI
2nd June 2025
56AQI
3rd June 2025
75AQI
4th June 2025
85AQI
5th June 2025
84AQI
6th June 2025
82AQI
7th June 2025
69AQI
8th June 2025
56AQI
9th June 2025
70AQI
10th June 2025
80AQI
11th June 2025
75AQI
12th June 2025
70AQI
13th June 2025
71AQI
14th June 2025
54AQI
15th June 2025
56AQI
16th June 2025
56AQI
17th June 2025
48AQI
18th June 2025
40AQI
19th June 2025
44AQI
20th June 2025
48AQI
21st June 2025
52AQI
22nd June 2025
53AQI
23rd June 2025
56AQI
24th June 2025
45AQI
25th June 2025
55AQI
26th June 2025
56AQI
27th June 2025
48AQI
28th June 2025
44AQI
29th June 2025
47AQI
30th June 2025
44AQI
1st July 2025
40AQI
2nd July 2025
33AQI
3rd July 2025
38AQI
4th July 2025
48AQI
5th July 2025
60AQI
6th July 2025
69AQI
7th July 2025
67AQI
8th July 2025
65AQI
9th July 2025
72AQI
10th July 2025
57AQI
11th July 2025
63AQI
12th July 2025
63AQI
13th July 2025
65AQI
14th July 2025
62AQI
15th July 2025
59AQI
16th July 2025
58AQI
17th July 2025
59AQI
18th July 2025
67AQI
19th July 2025
67AQI
20th July 2025
58AQI
21st July 2025
49AQI
22nd July 2025
49AQI
23rd July 2025
53AQI
24th July 2025
56AQI
25th July 2025
59AQI
26th July 2025
60AQI
27th July 2025
63AQI
28th July 2025
57AQI
29th July 2025
63AQI
30th July 2025
63AQI
31st July 2025
61AQI
1st August 2025
62AQI
2nd August 2025
62AQI
3rd August 2025
58AQI
4th August 2025
61AQI
5th August 2025
61AQI
6th August 2025
47AQI
7th August 2025
49AQI
8th August 2025
54AQI
9th August 2025
60AQI
10th August 2025
61AQI
11th August 2025
61AQI
12th August 2025
63AQI
13th August 2025
63AQI
14th August 2025
60AQI
15th August 2025
44AQI
16th August 2025
50AQI
17th August 2025
54AQI
18th August 2025
52AQI
19th August 2025
41AQI
20th August 2025
44AQI
21st August 2025
47AQI
22nd August 2025
48AQI
23rd August 2025
53AQI
24th August 2025
54AQI
25th August 2025
50AQI
26th August 2025
51AQI
27th August 2025
54AQI
28th August 2025
57AQI
29th August 2025
56AQI
30th August 2025
55AQI
31st August 2025
58AQI
1st September 2025
58AQI
2nd September 2025
59AQI
3rd September 2025
59AQI
4th September 2025
63AQI
5th September 2025
70AQI
6th September 2025
69AQI
7th September 2025
72AQI
8th September 2025
67AQI
9th September 2025
50AQI
10th September 2025
54AQI
11th September 2025
49AQI
12th September 2025
51AQI
13th September 2025
56AQI
14th September 2025
58AQI
15th September 2025
58AQI
16th September 2025
58AQI
17th September 2025
51AQI
18th September 2025
77AQI
19th September 2025
80AQI
20th September 2025
66AQI
21st September 2025
65AQI
22nd September 2025
58AQI
23rd September 2025
66AQI
24th September 2025
46AQI
25th September 2025
41AQI
26th September 2025
32AQI
27th September 2025
61AQI
28th September 2025
61AQI
29th September 2025
89AQI
30th September 2025
141AQI
1st October 2025
2nd October 2025
3rd October 2025
4th October 2025
5th October 2025
6th October 2025
7th October 2025
8th October 2025
9th October 2025
10th October 2025
11th October 2025
12th October 2025
13th October 2025
14th October 2025
15th October 2025
16th October 2025
17th October 2025
18th October 2025
19th October 2025
20th October 2025
21st October 2025
22nd October 2025
23rd October 2025
24th October 2025
25th October 2025
26th October 2025
27th October 2025
28th October 2025
29th October 2025
30th October 2025
31st October 2025
1st November 2025
2nd November 2025
3rd November 2025
4th November 2025
5th November 2025
6th November 2025
7th November 2025
8th November 2025
9th November 2025
10th November 2025
11th November 2025
12th November 2025
13th November 2025
14th November 2025
15th November 2025
16th November 2025
17th November 2025
18th November 2025
19th November 2025
20th November 2025
21st November 2025
22nd November 2025
23rd November 2025
24th November 2025
25th November 2025
26th November 2025
27th November 2025
28th November 2025
29th November 2025
30th November 2025
1st December 2025
2nd December 2025
3rd December 2025
4th December 2025
5th December 2025
6th December 2025
7th December 2025
8th December 2025
9th December 2025
10th December 2025
11th December 2025
12th December 2025
13th December 2025
14th December 2025
15th December 2025
16th December 2025
17th December 2025
18th December 2025
19th December 2025
20th December 2025
21st December 2025
22nd December 2025
23rd December 2025
24th December 2025
25th December 2025
26th December 2025
27th December 2025
28th December 2025
29th December 2025
30th December 2025
31st December 2025

150AQI

113AQI

97AQI

126AQI

79AQI

59AQI

58AQI

55AQI

63AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202589AQI

2
13
14
2
8
18
2
22
9
13
12
3
1
1
29
2
9
21
6
25
9
22
5
24
1
29
166
55
19
3
1

Highest AQI recorded in

January

150AQI

Lowest AQI recorded in

August

55AQI

202493AQI

2
2
14
11
2
2
14
8
4
1
1
16
12
2
2
19
9
5
18
8
15
14
1
14
17
8
22
1
22
8
2
11
17
1
3
8
14
5
2
16
13
54
165
108
36
3

Highest AQI recorded in

December

139AQI

Lowest AQI recorded in

July

47AQI

2023100AQI

1
4
11
14
1
2
5
12
9
2
11
14
4
3
15
12
1
20
10
6
17
7
3
28
2
26
3
3
19
7
1
1
10
19
1
1
4
15
6
9
15
5
2
25
168
125
40
3

Highest AQI recorded in

January

143AQI

Lowest AQI recorded in

July

62AQI

202293AQI

1
11
12
7
1
15
4
1
4
12
11
4
2
18
10
2
22
5
2
11
18
1
14
10
1
6
22
3
13
14
1
3
17
9
1
3
14
14
41
146
102
30

Highest AQI recorded in

December

139AQI

Lowest AQI recorded in

July

49AQI

202193AQI

1
12
18
1
13
11
3
16
14
1
2
25
3
6
23
2
7
17
6
4
27
1
19
1
4
20
6
2
20
9
1
13
15
1
7
14
10
28
201
93
33

Highest AQI recorded in

January

150AQI

Lowest AQI recorded in

July

62AQI

202087AQI

5
5
3
1
11
9
1
13
4
15
15
9
22
12
16
3
5
16
9
3
10
16
2
2
9
15
4
3
12
15
1
53
120
71
21
1

Highest AQI recorded in

December

149AQI

Lowest AQI recorded in

June

51AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded
2023(Avg.)
100AQI
Least Polluted Year Recorded
2020(Avg.)
87AQI

Lengshuitan District Environmental Protection Bureau's annual 2025 AQI (89) shows an average percentage change of -4.7% (improved AQI) compared to previous years: 2020 (87), 2021 (93), 2022 (93), 2023 (100), 2024 (93).