Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
55
*
PM2.5
67
PM10
99
O3
0.7
CO
10
SO2
16
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
29 Mar
121
Light
Mon
30 Mar
105
Light
Tue
31 Mar
101
Light
Wed
1 Apr
122
Light
Thu
2 Apr
114
Light
Fri
3 Apr
119
Light
Sat
4 Apr
19
Excellent
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