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.
155
*
PM2.5
316
PM10
42
O3
1.6
CO
5
SO2
65
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
28 Jan
171
Moderate
Thu
29 Jan
155
Moderate
Fri
30 Jan
144
Light
Sat
31 Jan
145
Light
Sun
1 Feb
143
Light
Mon
2 Feb
139
Light
Tue
3 Feb
16
Excellent
Air quality in the last 12 months (Chang'an)
|
2025/12
|
86
|
91
|
86
|
95
|
117
|
128
|
70
|
83
|
117
|
129
|
129
|
108
|
78
|
77
|
99
|
102
|
121
|
177
|
128
|
59
|
68
|
114
|
103
|
95
|
76
|
85
|
107
|
139
|
158
|
197
|
123
|
|
2025/11
|
52
|
68
|
107
|
116
|
113
|
59
|
49
|
51
|
61
|
95
|
89
|
88
|
73
|
93
|
107
|
74
|
26
|
36
|
41
|
53
|
65
|
74
|
56
|
80
|
74
|
149
|
134
|
59
|
62
|
71
|
|
|
2025/10
|
15
|
24
|
43
|
26
|
16
|
14
|
14
|
39
|
17
|
14
|
9
|
11
|
23
|
52
|
29
|
47
|
9
|
27
|
37
|
28
|
46
|
56
|
66
|
74
|
53
|
32
|
61
|
68
|
80
|
71
|
58
|
|
2025/09
|
39
|
32
|
33
|
19
|
25
|
50
|
56
|
43
|
46
|
50
|
24
|
21
|
35
|
52
|
52
|
27
|
15
|
10
|
15
|
30
|
21
|
17
|
18
|
28
|
46
|
47
|
39
|
14
|
29
|
43
|
|
|
2025/08
|
37
|
43
|
38
|
35
|
22
|
29
|
42
|
32
|
17
|
18
|
24
|
37
|
46
|
45
|
28
|
24
|
22
|
20
|
21
|
27
|
57
|
40
|
22
|
23
|
41
|
33
|
30
|
16
|
12
|
21
|
26
|
|
2025/07
|
26
|
23
|
30
|
29
|
18
|
27
|
27
|
27
|
38
|
36
|
33
|
44
|
46
|
39
|
33
|
43
|
41
|
25
|
39
|
26
|
27
|
47
|
39
|
26
|
16
|
20
|
24
|
23
|
34
|
43
|
29
|
|
2025/06
|
51
|
46
|
49
|
48
|
42
|
43
|
34
|
36
|
42
|
51
|
52
|
46
|
49
|
47
|
72
|
57
|
59
|
55
|
39
|
42
|
37
|
31
|
34
|
39
|
32
|
38
|
40
|
35
|
36
|
21
|
|
|
2025/05
|
102
|
73
|
78
|
78
|
125
|
475
|
178
|
105
|
80
|
49
|
39
|
54
|
39
|
71
|
73
|
60
|
200
|
128
|
81
|
66
|
71
|
78
|
63
|
56
|
47
|
46
|
55
|
48
|
41
|
57
|
46
|
|
2025/04
|
87
|
99
|
99
|
124
|
110
|
97
|
75
|
91
|
117
|
117
|
132
|
328
|
136
|
89
|
67
|
119
|
138
|
123
|
105
|
72
|
72
|
163
|
103
|
70
|
94
|
72
|
49
|
51
|
56
|
125
|
|
|
2025/03
|
181
|
65
|
26
|
69
|
72
|
72
|
88
|
84
|
79
|
80
|
229
|
188
|
84
|
45
|
49
|
52
|
49
|
50
|
48
|
60
|
69
|
70
|
83
|
68
|
62
|
221
|
198
|
133
|
111
|
96
|
92
|
|
2025/02
|
222
|
151
|
36
|
48
|
50
|
51
|
102
|
48
|
63
|
93
|
124
|
85
|
74
|
87
|
67
|
84
|
103
|
111
|
127
|
124
|
143
|
167
|
81
|
80
|
81
|
83
|
101
|
105
|
|||
|
2025/01
|
120
|
88
|
113
|
121
|
91
|
90
|
93
|
79
|
83
|
82
|
63
|
90
|
102
|
82
|
55
|
67
|
119
|
95
|
94
|
126
|
202
|
237
|
228
|
156
|
64
|
85
|
79
|
109
|
321
|
280
|
236
|
|
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