Air Quality
Excellent
No health implications.
30
PM2.5
35
PM10
76
O3
0.7
CO
7
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Mar
80
Good
Mon
23 Mar
69
Good
Tue
24 Mar
86
Good
Wed
25 Mar
84
Good
Thu
26 Mar
72
Good
Fri
27 Mar
74
Good
Sat
28 Mar
17
Excellent
Hekou Air quality rank
Air quality in the last 12 months (Hekou)
|
2026/02
|
28
|
25
|
34
|
42
|
40
|
42
|
48
|
29
|
19
|
28
|
25
|
30
|
32
|
33
|
33
|
50
|
65
|
40
|
26
|
24
|
35
|
39
|
33
|
44
|
35
|
26
|
33
|
41
|
|||
|
2026/01
|
45
|
25
|
19
|
23
|
19
|
19
|
28
|
41
|
34
|
41
|
56
|
58
|
78
|
64
|
70
|
43
|
47
|
43
|
47
|
47
|
43
|
23
|
22
|
25
|
35
|
36
|
33
|
36
|
45
|
42
|
43
|
|
2025/12
|
45
|
49
|
55
|
52
|
43
|
36
|
37
|
42
|
41
|
40
|
41
|
45
|
39
|
34
|
28
|
35
|
33
|
24
|
26
|
42
|
40
|
36
|
38
|
31
|
33
|
31
|
30
|
33
|
36
|
39
|
34
|
|
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
|
|
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