Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
25
PM2.5
63
*
PM10
15
O3
0.4
CO
4
SO2
39
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
17 Apr
84
Good
Sat
18 Apr
87
Good
Sun
19 Apr
135
Light
Mon
20 Apr
89
Good
Tue
21 Apr
70
Good
Wed
22 Apr
30
Excellent
Thu
23 Apr
27
Excellent
Air quality in the last 12 months (Chang'an)
|
2026/03
|
19
|
36
|
56
|
124
|
100
|
69
|
53
|
55
|
52
|
96
|
96
|
107
|
138
|
67
|
40
|
63
|
50
|
85
|
109
|
93
|
92
|
103
|
104
|
67
|
74
|
79
|
63
|
54
|
62
|
36
|
45
|
|
2026/02
|
120
|
97
|
119
|
105
|
120
|
153
|
73
|
68
|
87
|
144
|
131
|
107
|
71
|
92
|
76
|
54
|
165
|
99
|
67
|
45
|
185
|
298
|
141
|
45
|
66
|
60
|
67
|
62
|
|||
|
2026/01
|
75
|
114
|
145
|
68
|
50
|
46
|
54
|
66
|
62
|
62
|
66
|
63
|
65
|
100
|
100
|
99
|
105
|
130
|
73
|
34
|
67
|
100
|
140
|
184
|
208
|
152
|
148
|
173
|
174
|
120
|
111
|
|
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
|
|
|
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