Air Quality
Excellent
No health implications.
20
PM2.5
35
PM10
59
O3
0.5
CO
6
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Aug
87
Good
Fri
22 Aug
79
Good
Sat
23 Aug
72
Good
Sun
24 Aug
65
Good
Mon
25 Aug
61
Good
Tue
26 Aug
30
Excellent
Wed
27 Aug
15
Excellent
Air quality in the last 12 months (Tiantai)
|
2025/06
|
24
|
30
|
23
|
33
|
36
|
30
|
37
|
39
|
33
|
26
|
16
|
24
|
14
|
16
|
17
|
19
|
35
|
29
|
19
|
16
|
27
|
37
|
22
|
26
|
26
|
35
|
25
|
22
|
20
|
12
|
|
|
2025/05
|
42
|
44
|
53
|
35
|
31
|
63
|
73
|
46
|
23
|
36
|
36
|
35
|
35
|
34
|
33
|
31
|
31
|
40
|
22
|
24
|
19
|
32
|
17
|
37
|
54
|
42
|
34
|
26
|
21
|
42
|
45
|
|
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
|
|
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