Air Quality
Excellent
No health implications.
21
PM2.5
33
PM10
136
O3
0.5
CO
7
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Jun
52
Good
Fri
20 Jun
56
Good
Sat
21 Jun
57
Good
Sun
22 Jun
84
Good
Mon
23 Jun
94
Good
Tue
24 Jun
40
Excellent
Wed
25 Jun
28
Excellent
Air quality in the last 12 months (Heishan)
|
2025/05
|
37
|
36
|
42
|
31
|
31
|
38
|
49
|
63
|
39
|
41
|
67
|
75
|
63
|
63
|
68
|
51
|
30
|
32
|
57
|
61
|
61
|
69
|
32
|
50
|
34
|
50
|
58
|
58
|
47
|
58
|
51
|
|
2025/04
|
86
|
46
|
64
|
60
|
44
|
59
|
88
|
44
|
61
|
67
|
68
|
35
|
17
|
21
|
48
|
71
|
83
|
23
|
37
|
50
|
48
|
23
|
53
|
62
|
47
|
76
|
37
|
44
|
73
|
59
|
|
|
2025/03
|
120
|
46
|
40
|
66
|
88
|
51
|
76
|
83
|
144
|
111
|
95
|
96
|
52
|
50
|
44
|
38
|
61
|
37
|
60
|
77
|
58
|
68
|
172
|
66
|
109
|
134
|
51
|
28
|
28
|
33
|
63
|
|
2025/02
|
95
|
114
|
42
|
31
|
42
|
61
|
60
|
42
|
46
|
65
|
85
|
40
|
67
|
93
|
110
|
50
|
30
|
29
|
38
|
35
|
38
|
37
|
39
|
63
|
70
|
75
|
124
|
180
|
|||
|
2025/01
|
50
|
40
|
56
|
91
|
107
|
78
|
42
|
35
|
38
|
58
|
102
|
123
|
85
|
49
|
38
|
65
|
67
|
90
|
58
|
94
|
53
|
67
|
128
|
114
|
83
|
131
|
76
|
65
|
115
|
59
|
82
|
|
2024/12
|
64
|
22
|
39
|
38
|
51
|
25
|
35
|
48
|
78
|
46
|
39
|
74
|
43
|
47
|
37
|
46
|
29
|
44
|
72
|
72
|
38
|
46
|
36
|
70
|
94
|
43
|
41
|
48
|
81
|
76
|
43
|
|
2024/11
|
59
|
63
|
69
|
22
|
34
|
49
|
80
|
95
|
69
|
52
|
45
|
62
|
71
|
35
|
57
|
27
|
19
|
19
|
59
|
85
|
53
|
37
|
83
|
104
|
63
|
25
|
44
|
46
|
57
|
65
|
|
|
2024/10
|
21
|
29
|
35
|
52
|
68
|
49
|
39
|
62
|
54
|
31
|
45
|
51
|
72
|
46
|
24
|
49
|
62
|
49
|
26
|
40
|
40
|
26
|
35
|
62
|
112
|
71
|
24
|
69
|
84
|
49
|
82
|
|
2024/09
|
21
|
20
|
41
|
33
|
17
|
31
|
43
|
48
|
41
|
21
|
39
|
35
|
41
|
14
|
26
|
47
|
42
|
35
|
53
|
11
|
15
|
25
|
45
|
49
|
27
|
43
|
52
|
62
|
49
|
14
|
|
|
2024/08
|
25
|
18
|
45
|
22
|
20
|
29
|
36
|
41
|
54
|
32
|
47
|
24
|
16
|
24
|
28
|
38
|
47
|
51
|
29
|
28
|
22
|
23
|
30
|
52
|
30
|
33
|
27
|
37
|
41
|
42
|
26
|
|
2024/07
|
58
|
66
|
29
|
47
|
60
|
58
|
30
|
55
|
56
|
56
|
61
|
69
|
52
|
56
|
48
|
19
|
25
|
43
|
50
|
31
|
41
|
25
|
39
|
27
|
20
|
9
|
17
|
16
|
27
|
43
|
30
|
|
2024/06
|
23
|
49
|
33
|
49
|
45
|
46
|
36
|
39
|
41
|
53
|
57
|
46
|
33
|
31
|
19
|
42
|
58
|
64
|
47
|
35
|
28
|
53
|
76
|
14
|
22
|
40
|
55
|
40
|
28
|
27
|
|
|
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