Air Quality
Heavy
Healthy people will commonly show symptoms. People with respiratory or heart diseases will be significantly affected and will experience reduced endurance in activities.
62
PM2.5
418
*
PM10
97
O3
0.5
CO
7
SO2
14
NO2
Healthy people will commonly show symptoms. People with respiratory or heart diseases will be significantly affected and will experience reduced endurance in activities.
Advise
Children, seniors and individuals with heart or lung diseases should stay indoors and avoid outdoor activities. General population should reduce outdoor activities.
Air Quality
Today
25 Feb
101
Light
Thu
26 Feb
55
Good
Fri
27 Feb
59
Good
Sat
28 Feb
54
Good
Sun
1 Mar
60
Good
Mon
2 Mar
61
Good
Tue
3 Mar
31
Excellent
Air quality in the last 12 months (Changtu)
|
2026/01
|
69
|
86
|
97
|
140
|
82
|
70
|
49
|
55
|
82
|
51
|
40
|
45
|
35
|
48
|
58
|
80
|
59
|
54
|
44
|
57
|
62
|
51
|
58
|
53
|
86
|
92
|
71
|
67
|
105
|
78
|
71
|
|
2025/12
|
66
|
29
|
31
|
47
|
55
|
75
|
89
|
43
|
84
|
113
|
56
|
73
|
91
|
123
|
78
|
79
|
89
|
63
|
66
|
38
|
48
|
45
|
45
|
81
|
52
|
60
|
91
|
105
|
42
|
45
|
41
|
|
2025/11
|
54
|
24
|
35
|
53
|
100
|
72
|
89
|
186
|
51
|
37
|
69
|
88
|
53
|
85
|
108
|
62
|
38
|
52
|
65
|
44
|
67
|
90
|
139
|
224
|
102
|
83
|
47
|
46
|
58
|
43
|
|
|
2025/10
|
51
|
58
|
51
|
44
|
28
|
32
|
43
|
32
|
39
|
52
|
73
|
49
|
56
|
108
|
61
|
57
|
77
|
33
|
39
|
42
|
53
|
51
|
54
|
64
|
93
|
43
|
46
|
89
|
102
|
39
|
35
|
|
2025/09
|
34
|
40
|
38
|
34
|
34
|
25
|
29
|
25
|
28
|
26
|
37
|
43
|
38
|
38
|
21
|
26
|
22
|
24
|
25
|
33
|
33
|
24
|
33
|
22
|
42
|
33
|
34
|
33
|
48
|
46
|
|
|
2025/08
|
32
|
34
|
19
|
17
|
21
|
18
|
20
|
22
|
20
|
27
|
20
|
32
|
26
|
34
|
36
|
25
|
16
|
28
|
42
|
26
|
20
|
16
|
43
|
14
|
12
|
22
|
21
|
12
|
20
|
46
|
28
|
|
2025/07
|
23
|
26
|
17
|
17
|
23
|
18
|
21
|
32
|
44
|
43
|
42
|
42
|
20
|
20
|
18
|
22
|
20
|
25
|
29
|
19
|
24
|
32
|
19
|
22
|
28
|
35
|
31
|
19
|
24
|
16
|
19
|
|
2025/06
|
28
|
44
|
24
|
16
|
33
|
29
|
19
|
36
|
32
|
17
|
23
|
28
|
30
|
34
|
36
|
21
|
34
|
36
|
33
|
20
|
19
|
26
|
34
|
44
|
43
|
49
|
45
|
25
|
39
|
17
|
|
|
2025/05
|
21
|
31
|
29
|
28
|
35
|
26
|
50
|
47
|
41
|
35
|
42
|
59
|
54
|
52
|
50
|
34
|
27
|
32
|
36
|
39
|
43
|
49
|
33
|
39
|
28
|
42
|
48
|
52
|
50
|
58
|
57
|
|
2025/04
|
93
|
83
|
80
|
68
|
39
|
45
|
60
|
63
|
86
|
83
|
63
|
33
|
12
|
24
|
47
|
48
|
54
|
35
|
39
|
57
|
70
|
20
|
44
|
77
|
70
|
90
|
47
|
52
|
70
|
54
|
|
|
2025/03
|
91
|
32
|
41
|
55
|
79
|
71
|
58
|
86
|
106
|
97
|
71
|
127
|
36
|
45
|
55
|
60
|
79
|
71
|
79
|
94
|
91
|
201
|
168
|
95
|
131
|
154
|
56
|
29
|
33
|
42
|
69
|
|
2025/02
|
124
|
175
|
76
|
73
|
61
|
65
|
57
|
51
|
71
|
65
|
70
|
49
|
67
|
84
|
94
|
53
|
35
|
35
|
45
|
57
|
56
|
56
|
59
|
60
|
105
|
62
|
85
|
120
|
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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14
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15
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16
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17
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18
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19
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20
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21
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22
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23
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24
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25
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26
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27
|
28
|
29
|
30
|
31
|
- Excellent
- Good
- Lightly
- Moderately
- Heavily
- Severely
Air quality source: CNEMC
*: primary pollution