Air Quality
Excellent
No health implications.
11
PM2.5
21
PM10
77
O3
0.5
CO
6
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Dec
52
Good
Wed
17 Dec
47
Excellent
Thu
18 Dec
50
Excellent
Fri
19 Dec
50
Excellent
Sat
20 Dec
45
Excellent
Sun
21 Dec
49
Excellent
Mon
22 Dec
23
Excellent
Hekou Air quality rank
Air quality in the last 12 months (Hekou)
|
2025/11
|
21
|
16
|
18
|
23
|
14
|
20
|
21
|
18
|
13
|
11
|
16
|
21
|
26
|
25
|
28
|
32
|
33
|
15
|
17
|
30
|
42
|
41
|
30
|
34
|
44
|
49
|
45
|
47
|
45
|
45
|
|
|
2025/10
|
17
|
16
|
21
|
23
|
22
|
27
|
16
|
17
|
22
|
25
|
34
|
37
|
37
|
27
|
20
|
17
|
25
|
30
|
28
|
33
|
24
|
23
|
26
|
29
|
17
|
18
|
19
|
23
|
27
|
30
|
31
|
|
2025/09
|
16
|
16
|
20
|
23
|
23
|
26
|
29
|
28
|
23
|
16
|
17
|
14
|
15
|
20
|
24
|
23
|
24
|
20
|
20
|
19
|
29
|
29
|
21
|
23
|
24
|
20
|
21
|
26
|
22
|
18
|
|
|
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
|
|
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