Air Quality
Excellent
No health implications.
3
PM2.5
18
PM10
60
O3
0.7
CO
5
SO2
3
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Jul
66
Good
Thu
24 Jul
75
Good
Fri
25 Jul
82
Good
Sat
26 Jul
81
Good
Sun
27 Jul
75
Good
Mon
28 Jul
74
Good
Tue
29 Jul
21
Excellent
Air quality in the last 12 months (Tieshan)
|
2025/06
|
15
|
17
|
43
|
51
|
35
|
37
|
31
|
15
|
29
|
29
|
31
|
31
|
31
|
31
|
30
|
41
|
33
|
19
|
15
|
22
|
22
|
12
|
23
|
27
|
41
|
36
|
17
|
16
|
21
|
22
|
|
|
2025/05
|
56
|
56
|
60
|
56
|
56
|
82
|
120
|
48
|
44
|
49
|
47
|
39
|
54
|
61
|
49
|
35
|
43
|
93
|
75
|
42
|
31
|
37
|
43
|
52
|
46
|
49
|
60
|
37
|
34
|
30
|
20
|
|
2025/04
|
75
|
64
|
69
|
74
|
80
|
68
|
55
|
69
|
74
|
67
|
60
|
187
|
103
|
93
|
55
|
60
|
68
|
71
|
77
|
88
|
40
|
60
|
70
|
64
|
59
|
50
|
48
|
64
|
60
|
62
|
|
|
2025/03
|
47
|
41
|
21
|
51
|
67
|
65
|
68
|
82
|
91
|
88
|
80
|
72
|
64
|
53
|
34
|
49
|
38
|
47
|
49
|
51
|
55
|
60
|
77
|
62
|
57
|
67
|
80
|
59
|
63
|
68
|
71
|
|
2025/02
|
63
|
58
|
80
|
65
|
59
|
53
|
67
|
36
|
43
|
54
|
55
|
99
|
106
|
71
|
87
|
79
|
62
|
69
|
57
|
77
|
67
|
41
|
90
|
114
|
108
|
94
|
76
|
64
|
|||
|
2025/01
|
114
|
150
|
198
|
154
|
82
|
88
|
86
|
69
|
43
|
54
|
71
|
92
|
82
|
85
|
53
|
64
|
67
|
78
|
99
|
139
|
98
|
112
|
221
|
173
|
33
|
43
|
50
|
62
|
142
|
58
|
78
|
|
2024/12
|
53
|
65
|
130
|
102
|
55
|
55
|
51
|
111
|
54
|
73
|
90
|
113
|
84
|
58
|
58
|
62
|
91
|
87
|
55
|
84
|
121
|
67
|
69
|
83
|
121
|
148
|
167
|
48
|
60
|
96
|
108
|
|
2024/11
|
59
|
109
|
77
|
102
|
69
|
48
|
43
|
46
|
51
|
79
|
55
|
51
|
53
|
74
|
87
|
102
|
23
|
20
|
32
|
41
|
49
|
58
|
72
|
51
|
39
|
41
|
52
|
58
|
54
|
58
|
|
|
2024/10
|
24
|
39
|
33
|
32
|
37
|
64
|
32
|
32
|
53
|
84
|
83
|
67
|
101
|
90
|
108
|
48
|
31
|
27
|
18
|
29
|
53
|
35
|
52
|
50
|
66
|
52
|
52
|
102
|
126
|
77
|
42
|
|
2024/09
|
45
|
51
|
45
|
38
|
41
|
45
|
48
|
45
|
46
|
41
|
49
|
37
|
38
|
53
|
31
|
35
|
47
|
44
|
42
|
36
|
35
|
31
|
29
|
40
|
49
|
51
|
54
|
25
|
33
|
46
|
|
|
2024/08
|
21
|
24
|
30
|
30
|
30
|
36
|
37
|
38
|
38
|
42
|
84
|
81
|
53
|
33
|
28
|
34
|
41
|
44
|
43
|
39
|
38
|
41
|
36
|
41
|
43
|
41
|
29
|
20
|
39
|
49
|
52
|
|
2024/07
|
22
|
25
|
35
|
24
|
26
|
25
|
29
|
30
|
35
|
43
|
43
|
27
|
33
|
41
|
37
|
42
|
29
|
34
|
25
|
29
|
23
|
24
|
35
|
41
|
33
|
22
|
14
|
16
|
14
|
23
|
24
|
|
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