Air Quality
Excellent
No health implications.
25
PM2.5
32
PM10
93
O3
0.6
CO
8
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Jul
94
Good
Fri
18 Jul
88
Good
Sat
19 Jul
95
Good
Sun
20 Jul
101
Light
Mon
21 Jul
68
Good
Tue
22 Jul
37
Excellent
Wed
23 Jul
47
Excellent
Si County Air quality rank
Air quality in the last 12 months (Si County)
|
2025/06
|
31
|
15
|
51
|
65
|
60
|
54
|
33
|
43
|
35
|
52
|
46
|
43
|
58
|
35
|
38
|
57
|
47
|
34
|
13
|
12
|
24
|
38
|
41
|
35
|
33
|
50
|
28
|
16
|
12
|
17
|
|
|
2025/05
|
61
|
68
|
48
|
50
|
45
|
76
|
76
|
50
|
21
|
33
|
49
|
49
|
51
|
64
|
91
|
52
|
73
|
68
|
77
|
62
|
46
|
62
|
65
|
60
|
57
|
67
|
69
|
55
|
60
|
61
|
71
|
|
2025/04
|
62
|
58
|
50
|
73
|
72
|
68
|
65
|
81
|
82
|
83
|
74
|
181
|
89
|
65
|
52
|
63
|
73
|
80
|
78
|
55
|
53
|
76
|
84
|
81
|
63
|
55
|
55
|
58
|
56
|
60
|
|
|
2025/03
|
107
|
52
|
42
|
68
|
93
|
76
|
78
|
96
|
94
|
81
|
117
|
158
|
98
|
54
|
56
|
44
|
54
|
49
|
57
|
59
|
57
|
63
|
76
|
111
|
95
|
76
|
111
|
126
|
86
|
65
|
58
|
|
2025/02
|
88
|
96
|
116
|
87
|
61
|
55
|
62
|
40
|
51
|
65
|
95
|
114
|
61
|
86
|
108
|
99
|
56
|
59
|
66
|
46
|
50
|
71
|
64
|
58
|
76
|
114
|
114
|
121
|
|||
|
2025/01
|
93
|
143
|
87
|
105
|
151
|
84
|
56
|
76
|
42
|
54
|
85
|
96
|
101
|
132
|
65
|
72
|
112
|
116
|
147
|
143
|
172
|
137
|
58
|
46
|
45
|
91
|
39
|
70
|
141
|
96
|
111
|
|
2024/12
|
84
|
115
|
56
|
86
|
126
|
164
|
121
|
44
|
62
|
94
|
86
|
66
|
95
|
74
|
80
|
99
|
141
|
65
|
65
|
88
|
85
|
59
|
75
|
108
|
134
|
130
|
79
|
73
|
68
|
104
|
105
|
|
2024/11
|
51
|
99
|
102
|
77
|
52
|
65
|
47
|
42
|
56
|
50
|
68
|
79
|
104
|
86
|
78
|
58
|
36
|
37
|
35
|
51
|
70
|
76
|
43
|
48
|
34
|
45
|
70
|
61
|
61
|
75
|
|
|
2024/10
|
29
|
39
|
43
|
38
|
37
|
26
|
17
|
50
|
47
|
67
|
79
|
91
|
63
|
74
|
85
|
76
|
36
|
21
|
39
|
44
|
58
|
67
|
61
|
51
|
62
|
55
|
80
|
70
|
65
|
69
|
62
|
|
2024/09
|
45
|
38
|
33
|
37
|
50
|
39
|
35
|
30
|
29
|
34
|
33
|
20
|
32
|
50
|
33
|
40
|
14
|
26
|
24
|
24
|
28
|
35
|
37
|
47
|
48
|
47
|
52
|
33
|
40
|
42
|
|
|
2024/08
|
21
|
18
|
25
|
31
|
30
|
21
|
25
|
23
|
40
|
44
|
86
|
52
|
46
|
32
|
27
|
26
|
28
|
30
|
28
|
23
|
38
|
45
|
42
|
43
|
43
|
38
|
13
|
23
|
29
|
30
|
36
|
|
2024/07
|
29
|
29
|
35
|
13
|
23
|
23
|
27
|
25
|
22
|
57
|
67
|
44
|
26
|
19
|
19
|
40
|
28
|
15
|
28
|
20
|
24
|
29
|
35
|
43
|
27
|
21
|
16
|
15
|
18
|
21
|
25
|
|
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