Air Quality
Excellent
No health implications.
12
PM2.5
24
PM10
79
O3
0.6
CO
4
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
24 May
86
Good
Sun
25 May
96
Good
Mon
26 May
96
Good
Tue
27 May
92
Good
Wed
28 May
64
Good
Thu
29 May
54
Good
Fri
30 May
37
Excellent
Air quality in the last 12 months (Tiantai)
|
2025/04
|
39
|
48
|
65
|
51
|
49
|
62
|
55
|
55
|
59
|
47
|
51
|
78
|
97
|
89
|
58
|
58
|
59
|
56
|
45
|
63
|
49
|
31
|
30
|
40
|
33
|
39
|
41
|
42
|
41
|
39
|
|
|
2025/03
|
40
|
44
|
50
|
18
|
30
|
30
|
48
|
61
|
59
|
40
|
49
|
51
|
28
|
32
|
13
|
39
|
39
|
48
|
54
|
57
|
48
|
48
|
54
|
60
|
65
|
66
|
62
|
51
|
42
|
44
|
33
|
|
2025/02
|
23
|
31
|
68
|
58
|
43
|
53
|
56
|
34
|
38
|
52
|
42
|
61
|
82
|
51
|
60
|
56
|
64
|
32
|
54
|
38
|
20
|
40
|
54
|
97
|
94
|
87
|
74
|
45
|
|||
|
2025/01
|
67
|
62
|
63
|
59
|
72
|
79
|
83
|
85
|
54
|
38
|
59
|
65
|
67
|
63
|
70
|
48
|
64
|
64
|
58
|
82
|
113
|
79
|
50
|
47
|
43
|
41
|
37
|
38
|
82
|
52
|
39
|
|
2024/12
|
58
|
53
|
69
|
55
|
46
|
45
|
122
|
54
|
44
|
54
|
25
|
69
|
40
|
113
|
64
|
53
|
61
|
70
|
37
|
48
|
73
|
63
|
61
|
53
|
62
|
103
|
76
|
55
|
61
|
64
|
79
|
|
2024/11
|
8
|
21
|
50
|
61
|
40
|
34
|
30
|
36
|
39
|
29
|
32
|
43
|
42
|
39
|
24
|
21
|
15
|
22
|
29
|
37
|
49
|
64
|
56
|
38
|
38
|
29
|
45
|
51
|
49
|
48
|
|
|
2024/10
|
16
|
20
|
23
|
21
|
19
|
12
|
10
|
24
|
40
|
50
|
60
|
48
|
33
|
41
|
41
|
30
|
33
|
36
|
25
|
30
|
51
|
37
|
33
|
30
|
31
|
21
|
15
|
34
|
52
|
39
|
25
|
|
2024/09
|
38
|
40
|
35
|
26
|
24
|
29
|
34
|
24
|
25
|
37
|
19
|
31
|
17
|
22
|
22
|
20
|
17
|
19
|
13
|
18
|
23
|
24
|
21
|
25
|
30
|
34
|
22
|
33
|
34
|
22
|
|
|
2024/08
|
23
|
31
|
37
|
44
|
36
|
35
|
39
|
38
|
33
|
34
|
41
|
40
|
39
|
28
|
36
|
40
|
32
|
20
|
15
|
19
|
15
|
24
|
36
|
38
|
37
|
30
|
40
|
26
|
27
|
24
|
30
|
|
2024/07
|
36
|
29
|
24
|
26
|
31
|
25
|
27
|
24
|
30
|
35
|
42
|
43
|
33
|
27
|
24
|
17
|
26
|
28
|
29
|
22
|
24
|
17
|
18
|
18
|
20
|
15
|
18
|
19
|
16
|
15
|
18
|
|
2024/06
|
17
|
19
|
31
|
53
|
40
|
15
|
20
|
38
|
41
|
19
|
17
|
21
|
27
|
32
|
35
|
27
|
13
|
22
|
26
|
29
|
34
|
37
|
41
|
29
|
26
|
23
|
36
|
30
|
25
|
31
|
|
|
2024/05
|
18
|
39
|
37
|
34
|
45
|
38
|
50
|
54
|
33
|
33
|
40
|
37
|
50
|
49
|
54
|
36
|
31
|
40
|
37
|
34
|
27
|
36
|
38
|
41
|
20
|
20
|
25
|
18
|
27
|
38
|
39
|
|
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