Air Quality
Excellent
No health implications.
3
PM2.5
11
PM10
59
O3
0.3
CO
5
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
2 Dec
47
Excellent
Wed
3 Dec
71
Good
Thu
4 Dec
82
Good
Fri
5 Dec
92
Good
Sat
6 Dec
110
Light
Sun
7 Dec
96
Good
Mon
8 Dec
32
Excellent
Air quality in the last 12 months (Hekou)
|
2025/11
|
83
|
18
|
32
|
72
|
92
|
70
|
68
|
86
|
45
|
65
|
87
|
105
|
41
|
84
|
164
|
98
|
28
|
41
|
57
|
45
|
60
|
97
|
125
|
109
|
32
|
84
|
51
|
93
|
134
|
134
|
|
|
2025/10
|
73
|
18
|
12
|
19
|
14
|
18
|
33
|
36
|
11
|
10
|
17
|
23
|
38
|
53
|
29
|
39
|
33
|
20
|
23
|
19
|
23
|
28
|
38
|
37
|
77
|
57
|
37
|
96
|
82
|
59
|
41
|
|
2025/09
|
20
|
37
|
38
|
28
|
27
|
26
|
51
|
63
|
41
|
44
|
43
|
34
|
36
|
54
|
49
|
43
|
17
|
18
|
11
|
27
|
30
|
21
|
26
|
36
|
51
|
55
|
43
|
40
|
53
|
60
|
|
|
2025/08
|
15
|
13
|
22
|
14
|
25
|
19
|
17
|
16
|
10
|
19
|
24
|
34
|
34
|
41
|
20
|
11
|
9
|
17
|
41
|
43
|
35
|
20
|
17
|
19
|
23
|
22
|
23
|
14
|
15
|
13
|
16
|
|
2025/07
|
20
|
20
|
25
|
34
|
34
|
11
|
22
|
22
|
23
|
30
|
32
|
36
|
23
|
14
|
19
|
12
|
24
|
26
|
15
|
31
|
11
|
10
|
10
|
21
|
25
|
24
|
12
|
18
|
15
|
13
|
15
|
|
2025/06
|
47
|
51
|
28
|
28
|
56
|
70
|
53
|
41
|
55
|
20
|
36
|
45
|
32
|
19
|
18
|
25
|
41
|
44
|
20
|
25
|
47
|
52
|
44
|
47
|
41
|
54
|
42
|
57
|
25
|
28
|
|
|
2025/05
|
46
|
49
|
30
|
47
|
46
|
29
|
49
|
55
|
31
|
26
|
50
|
57
|
60
|
57
|
30
|
58
|
48
|
54
|
74
|
75
|
55
|
60
|
40
|
42
|
44
|
49
|
57
|
60
|
54
|
55
|
59
|
|
2025/04
|
73
|
31
|
46
|
73
|
34
|
65
|
98
|
69
|
42
|
61
|
73
|
174
|
59
|
50
|
44
|
76
|
83
|
44
|
22
|
35
|
54
|
47
|
61
|
60
|
60
|
72
|
43
|
42
|
61
|
68
|
|
|
2025/03
|
80
|
53
|
35
|
47
|
31
|
50
|
48
|
113
|
121
|
86
|
105
|
104
|
62
|
55
|
46
|
29
|
40
|
28
|
54
|
60
|
55
|
67
|
106
|
113
|
84
|
120
|
85
|
42
|
32
|
53
|
76
|
|
2025/02
|
42
|
76
|
25
|
26
|
33
|
69
|
36
|
19
|
49
|
63
|
86
|
73
|
75
|
88
|
104
|
61
|
41
|
32
|
32
|
47
|
39
|
37
|
39
|
57
|
60
|
86
|
121
|
152
|
|||
|
2025/01
|
87
|
34
|
56
|
125
|
184
|
42
|
41
|
26
|
18
|
39
|
57
|
55
|
86
|
64
|
30
|
64
|
54
|
105
|
106
|
83
|
73
|
31
|
40
|
57
|
48
|
62
|
38
|
58
|
92
|
47
|
44
|
|
2024/12
|
97
|
50
|
34
|
51
|
97
|
39
|
27
|
48
|
85
|
95
|
29
|
50
|
55
|
43
|
54
|
60
|
39
|
32
|
57
|
82
|
37
|
49
|
73
|
115
|
145
|
31
|
50
|
61
|
83
|
97
|
56
|
|
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