Yunnan - China   2025-09-19   Friday   22.51N, 103.96E

Hekou

Yunnan - China
2025-09-19

Air Quality

Excellent

No health implications.

10

PM2.5

20

PM10

27

O3

0.4

CO

5

SO2

7

NO2

No health implications.

Advise

Everyone can continue their outdoor activities normally.

Air Quality

Today

19 Sep

34 Excellent

Sat

20 Sep

36 Excellent

Sun

21 Sep

35 Excellent

Mon

22 Sep

34 Excellent

Tue

23 Sep

36 Excellent

Wed

24 Sep

24 Excellent

Thu

25 Sep

25 Excellent

Monthly Average AQI (Hekou)

2020/09 - 2025/08

Air quality in the last 12 months (Hekou)

2025/08
19
24
19
20
27
25
15
15
15
16
21
24
23
33
27
17
18
26
18
16
17
18
17
21
22
20
14
15
18
21
17
2025/07
10
10
13
12
16
22
22
17
20
20
19
22
20
19
19
21
22
22
23
28
22
16
16
11
14
15
21
27
31
29
22
2025/06
15
15
22
28
23
35
33
25
23
36
46
28
28
26
26
16
16
11
17
18
16
13
17
13
13
14
14
12
10
12
2025/05
38
33
25
22
25
31
41
43
45
31
18
20
32
40
21
17
19
20
21
17
25
28
34
44
28
22
15
19
18
18
13
2025/04
42
55
63
88
96
35
46
52
56
60
60
60
82
74
61
48
42
38
37
36
34
34
45
53
46
48
60
51
34
35
2025/03
39
44
64
72
88
63
46
45
44
45
53
47
48
56
68
43
46
29
33
47
55
74
78
65
67
67
72
94
84
39
38
2025/02
48
57
33
36
56
51
30
25
23
33
48
55
39
41
51
49
35
28
33
37
27
30
25
16
21
19
32
40
2025/01
53
53
75
81
69
92
95
94
66
31
41
52
51
59
71
76
80
95
64
58
85
94
51
37
42
29
39
46
59
49
51
2024/12
43
50
41
40
41
27
20
17
22
30
39
26
28
35
68
52
43
49
63
68
74
69
71
67
72
86
74
47
43
58
45
2024/11
32
46
50
40
45
48
47
52
53
49
49
42
44
43
39
38
49
48
52
42
42
40
39
44
43
32
19
22
45
51
2024/10
16
17
25
25
33
34
39
50
39
35
38
44
52
35
28
13
15
27
30
24
31
31
26
42
45
35
42
45
40
30
30
2024/09
26
18
21
23
28
30
26
11
13
11
16
22
22
24
25
26
19
24
25
36
31
17
27
32
33
37
37
30
21
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
  • Excellent
  • Good
  • Lightly
  • Moderately
  • Heavily
  • Severely
Air quality source: CNEMC

*: primary pollution