Air Quality
Excellent
No health implications.
5
PM2.5
8
PM10
31
O3
0.6
CO
5
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
52
Good
Tue
26 May
48
Excellent
Wed
27 May
55
Good
Thu
28 May
68
Good
Fri
29 May
85
Good
Sat
30 May
76
Good
Sun
31 May
31
Excellent
Air quality in the last 12 months (Tongbai)
|
2026/04
|
55
|
56
|
37
|
75
|
79
|
76
|
65
|
52
|
35
|
60
|
67
|
56
|
44
|
45
|
41
|
48
|
55
|
60
|
65
|
91
|
43
|
30
|
44
|
38
|
49
|
56
|
53
|
56
|
42
|
47
|
|
|
2026/03
|
32
|
41
|
52
|
77
|
66
|
72
|
79
|
80
|
90
|
90
|
98
|
146
|
81
|
108
|
48
|
80
|
71
|
66
|
76
|
77
|
67
|
70
|
89
|
84
|
67
|
77
|
59
|
54
|
63
|
53
|
73
|
|
2026/02
|
81
|
86
|
88
|
103
|
122
|
102
|
74
|
80
|
69
|
76
|
87
|
85
|
76
|
83
|
83
|
44
|
79
|
70
|
69
|
59
|
50
|
114
|
150
|
57
|
40
|
32
|
64
|
48
|
|||
|
2026/01
|
59
|
92
|
103
|
94
|
110
|
54
|
40
|
58
|
67
|
88
|
65
|
79
|
116
|
109
|
90
|
122
|
129
|
71
|
55
|
55
|
50
|
76
|
87
|
103
|
160
|
179
|
137
|
99
|
104
|
86
|
82
|
|
2025/12
|
122
|
106
|
68
|
63
|
105
|
97
|
103
|
119
|
139
|
147
|
204
|
71
|
54
|
64
|
64
|
97
|
169
|
177
|
163
|
157
|
101
|
62
|
70
|
86
|
80
|
77
|
96
|
104
|
113
|
184
|
108
|
|
2025/11
|
55
|
73
|
93
|
82
|
67
|
87
|
27
|
37
|
65
|
77
|
71
|
57
|
84
|
118
|
98
|
92
|
37
|
30
|
33
|
54
|
64
|
63
|
71
|
88
|
86
|
73
|
124
|
91
|
74
|
82
|
|
|
2025/10
|
31
|
15
|
27
|
38
|
42
|
30
|
31
|
50
|
43
|
19
|
25
|
31
|
25
|
42
|
32
|
39
|
16
|
33
|
46
|
41
|
47
|
53
|
59
|
75
|
94
|
62
|
61
|
63
|
72
|
67
|
72
|
|
2025/09
|
27
|
31
|
37
|
37
|
30
|
38
|
42
|
28
|
26
|
26
|
21
|
17
|
32
|
30
|
31
|
39
|
24
|
20
|
14
|
30
|
41
|
24
|
14
|
22
|
36
|
20
|
25
|
34
|
26
|
23
|
|
|
2025/08
|
42
|
29
|
32
|
42
|
42
|
37
|
30
|
27
|
25
|
29
|
25
|
26
|
24
|
30
|
32
|
22
|
28
|
33
|
30
|
24
|
21
|
24
|
26
|
34
|
37
|
33
|
34
|
39
|
33
|
33
|
25
|
|
2025/07
|
22
|
18
|
22
|
22
|
28
|
35
|
29
|
43
|
26
|
31
|
51
|
42
|
32
|
29
|
34
|
44
|
40
|
37
|
37
|
38
|
36
|
28
|
16
|
21
|
28
|
33
|
32
|
28
|
29
|
37
|
41
|
|
2025/06
|
42
|
44
|
53
|
50
|
51
|
50
|
43
|
40
|
38
|
39
|
40
|
45
|
43
|
33
|
35
|
49
|
39
|
26
|
14
|
27
|
35
|
28
|
31
|
28
|
36
|
21
|
24
|
24
|
16
|
22
|
|
|
2025/05
|
63
|
74
|
53
|
47
|
63
|
150
|
129
|
69
|
71
|
39
|
45
|
51
|
57
|
50
|
70
|
57
|
108
|
116
|
137
|
72
|
58
|
60
|
62
|
63
|
54
|
56
|
61
|
62
|
52
|
43
|
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