Air Quality
Excellent
No health implications.
6
PM2.5
10
PM10
25
O3
0.4
CO
7
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Oct
33
Excellent
Sun
26 Oct
36
Excellent
Mon
27 Oct
32
Excellent
Tue
28 Oct
33
Excellent
Wed
29 Oct
38
Excellent
Thu
30 Oct
40
Excellent
Fri
31 Oct
27
Excellent
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