Air Quality
Excellent
No health implications.
18
PM2.5
41
PM10
159
O3
0.4
CO
10
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
11 May
95
Good
Mon
12 May
102
Light
Tue
13 May
107
Light
Wed
14 May
93
Good
Thu
15 May
99
Good
Fri
16 May
111
Light
Sat
17 May
32
Excellent
Air quality in the last 12 months (Hekou)
|
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
|
|
2024/11
|
70
|
56
|
87
|
34
|
40
|
55
|
69
|
69
|
56
|
80
|
65
|
92
|
120
|
66
|
70
|
66
|
31
|
28
|
46
|
74
|
73
|
30
|
24
|
58
|
46
|
30
|
32
|
37
|
55
|
67
|
|
|
2024/10
|
18
|
16
|
37
|
60
|
78
|
61
|
21
|
49
|
70
|
64
|
54
|
82
|
69
|
55
|
72
|
41
|
64
|
17
|
30
|
20
|
38
|
46
|
51
|
80
|
107
|
61
|
55
|
49
|
94
|
94
|
71
|
|
2024/09
|
43
|
19
|
23
|
39
|
30
|
14
|
18
|
35
|
44
|
33
|
17
|
30
|
26
|
24
|
18
|
24
|
40
|
37
|
30
|
23
|
19
|
21
|
32
|
48
|
60
|
23
|
25
|
43
|
41
|
20
|
|
|
2024/08
|
36
|
43
|
35
|
19
|
23
|
27
|
27
|
38
|
28
|
51
|
49
|
32
|
38
|
30
|
26
|
25
|
35
|
28
|
11
|
18
|
31
|
38
|
50
|
15
|
26
|
21
|
20
|
26
|
22
|
48
|
48
|
|
2024/07
|
49
|
44
|
41
|
44
|
39
|
16
|
35
|
27
|
55
|
50
|
67
|
72
|
83
|
44
|
31
|
24
|
34
|
47
|
40
|
22
|
37
|
24
|
40
|
40
|
18
|
10
|
11
|
13
|
16
|
29
|
27
|
|
2024/06
|
29
|
67
|
49
|
43
|
46
|
56
|
52
|
56
|
69
|
73
|
84
|
68
|
59
|
28
|
25
|
35
|
55
|
56
|
43
|
21
|
26
|
42
|
70
|
58
|
43
|
71
|
42
|
44
|
36
|
46
|
|
|
2024/05
|
48
|
56
|
64
|
47
|
34
|
63
|
76
|
68
|
73
|
69
|
228
|
53
|
64
|
97
|
41
|
54
|
68
|
77
|
54
|
18
|
37
|
51
|
57
|
36
|
35
|
36
|
29
|
30
|
53
|
58
|
42
|
|
2024/04
|
68
|
59
|
46
|
44
|
62
|
78
|
89
|
115
|
94
|
177
|
120
|
73
|
63
|
36
|
122
|
80
|
82
|
99
|
77
|
74
|
49
|
82
|
42
|
38
|
79
|
72
|
70
|
52
|
31
|
41
|
|
|
2024/03
|
40
|
82
|
100
|
85
|
62
|
41
|
80
|
33
|
59
|
110
|
146
|
114
|
110
|
121
|
103
|
82
|
92
|
92
|
114
|
45
|
86
|
81
|
75
|
58
|
31
|
67
|
79
|
229
|
181
|
99
|
77
|
|
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