Air Quality
Excellent
No health implications.
23
PM2.5
23
PM10
27
O3
0.6
CO
6
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
14 May
61
Good
Thu
15 May
60
Good
Fri
16 May
62
Good
Sat
17 May
66
Good
Sun
18 May
61
Good
Mon
19 May
32
Excellent
Tue
20 May
16
Excellent
Real-time AQI (Monitoring Station in Shiyan)
铁二处
3323
PM2.5
23
PM10
27
O3
0.6
CO
6
SO2
8
NO2
Air quality in the last 12 months (Shiyan)
|
2025/02
|
103
|
72
|
46
|
41
|
35
|
33
|
89
|
47
|
45
|
62
|
91
|
71
|
58
|
61
|
47
|
49
|
64
|
77
|
93
|
104
|
102
|
107
|
91
|
127
|
85
|
68
|
99
|
83
|
|||
|
2025/01
|
65
|
113
|
161
|
140
|
56
|
58
|
54
|
38
|
53
|
61
|
55
|
60
|
67
|
68
|
57
|
49
|
60
|
76
|
58
|
59
|
99
|
183
|
170
|
54
|
27
|
46
|
53
|
57
|
103
|
107
|
120
|
|
2024/12
|
42
|
46
|
70
|
62
|
38
|
35
|
42
|
81
|
76
|
72
|
72
|
105
|
48
|
36
|
36
|
45
|
58
|
73
|
49
|
69
|
65
|
51
|
43
|
60
|
68
|
69
|
100
|
48
|
54
|
50
|
48
|
|
2024/11
|
39
|
32
|
31
|
38
|
49
|
58
|
66
|
70
|
69
|
49
|
58
|
57
|
62
|
30
|
34
|
19
|
16
|
25
|
30
|
21
|
23
|
33
|
72
|
61
|
21
|
29
|
37
|
38
|
34
|
36
|
|
|
2024/10
|
28
|
34
|
37
|
35
|
43
|
40
|
34
|
48
|
46
|
38
|
47
|
44
|
50
|
38
|
41
|
71
|
49
|
23
|
26
|
26
|
20
|
20
|
26
|
33
|
44
|
46
|
33
|
39
|
54
|
64
|
52
|
|
2024/09
|
34
|
41
|
41
|
45
|
30
|
27
|
38
|
50
|
45
|
44
|
34
|
32
|
31
|
35
|
34
|
34
|
23
|
21
|
26
|
23
|
18
|
22
|
29
|
36
|
35
|
49
|
58
|
61
|
56
|
12
|
|
|
2024/08
|
24
|
26
|
24
|
20
|
18
|
21
|
21
|
32
|
33
|
71
|
61
|
28
|
23
|
32
|
36
|
31
|
30
|
25
|
19
|
27
|
18
|
26
|
39
|
46
|
35
|
33
|
19
|
21
|
32
|
33
|
37
|
|
2024/07
|
26
|
23
|
36
|
16
|
28
|
18
|
31
|
31
|
18
|
35
|
28
|
18
|
29
|
23
|
18
|
18
|
23
|
25
|
19
|
25
|
31
|
29
|
30
|
35
|
39
|
42
|
26
|
27
|
17
|
20
|
15
|
|
2024/06
|
54
|
64
|
44
|
30
|
22
|
33
|
43
|
38
|
36
|
32
|
27
|
28
|
33
|
32
|
33
|
39
|
19
|
39
|
38
|
31
|
28
|
27
|
29
|
67
|
79
|
53
|
51
|
33
|
28
|
35
|
|
|
2024/05
|
18
|
27
|
31
|
24
|
23
|
32
|
49
|
48
|
49
|
48
|
51
|
49
|
50
|
53
|
55
|
37
|
45
|
55
|
49
|
26
|
38
|
40
|
41
|
48
|
57
|
20
|
38
|
40
|
37
|
30
|
39
|
|
2024/04
|
57
|
23
|
54
|
60
|
54
|
37
|
31
|
34
|
38
|
34
|
27
|
27
|
46
|
27
|
33
|
45
|
47
|
45
|
54
|
79
|
66
|
54
|
122
|
108
|
62
|
47
|
49
|
51
|
41
|
14
|
|
|
2024/03
|
75
|
76
|
69
|
57
|
55
|
76
|
81
|
62
|
61
|
69
|
48
|
60
|
61
|
50
|
64
|
83
|
80
|
42
|
54
|
72
|
73
|
65
|
40
|
33
|
24
|
37
|
46
|
49
|
45
|
50
|
67
|
|
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