Air Quality
Excellent
No health implications.
7
PM2.5
13
PM10
40
O3
0.3
CO
4
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
22 Jun
32
Excellent
Mon
23 Jun
35
Excellent
Tue
24 Jun
37
Excellent
Wed
25 Jun
31
Excellent
Thu
26 Jun
31
Excellent
Fri
27 Jun
35
Excellent
Sat
28 Jun
24
Excellent
Air quality in the last 12 months (Hekou)
|
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
|
|
|
2024/08
|
10
|
14
|
13
|
13
|
12
|
14
|
14
|
15
|
13
|
18
|
23
|
32
|
21
|
33
|
39
|
31
|
34
|
32
|
30
|
25
|
17
|
9
|
12
|
17
|
15
|
11
|
13
|
26
|
26
|
26
|
20
|
|
2024/07
|
13
|
15
|
11
|
12
|
13
|
16
|
16
|
16
|
16
|
13
|
10
|
13
|
16
|
13
|
14
|
13
|
12
|
11
|
11
|
11
|
10
|
14
|
20
|
15
|
17
|
22
|
26
|
20
|
12
|
13
|
14
|
|
2024/06
|
24
|
23
|
19
|
20
|
19
|
14
|
11
|
13
|
14
|
18
|
12
|
12
|
12
|
15
|
13
|
16
|
26
|
24
|
26
|
22
|
21
|
20
|
20
|
18
|
21
|
10
|
9
|
14
|
15
|
13
|
|
|
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