Air Quality
Excellent
No health implications.
24
PM2.5
42
PM10
81
O3
0.6
CO
5
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
55
Good
Tue
26 May
60
Good
Wed
27 May
59
Good
Thu
28 May
49
Excellent
Fri
29 May
50
Excellent
Sat
30 May
58
Good
Sun
31 May
49
Excellent
Air quality in the last 12 months (Changyi)
|
2026/04
|
109
|
150
|
195
|
46
|
36
|
35
|
37
|
39
|
62
|
57
|
25
|
57
|
52
|
65
|
90
|
81
|
63
|
50
|
55
|
113
|
66
|
45
|
52
|
68
|
69
|
35
|
31
|
38
|
31
|
38
|
|
|
2026/03
|
41
|
68
|
92
|
51
|
56
|
47
|
47
|
50
|
60
|
44
|
77
|
98
|
51
|
100
|
148
|
171
|
148
|
63
|
55
|
75
|
78
|
147
|
119
|
67
|
125
|
199
|
140
|
162
|
105
|
50
|
67
|
|
2026/02
|
56
|
52
|
51
|
105
|
78
|
52
|
53
|
39
|
41
|
93
|
63
|
77
|
118
|
85
|
44
|
42
|
77
|
56
|
39
|
53
|
70
|
126
|
85
|
49
|
47
|
54
|
47
|
35
|
|||
|
2026/01
|
56
|
44
|
66
|
86
|
48
|
35
|
37
|
39
|
66
|
85
|
50
|
39
|
35
|
31
|
62
|
82
|
43
|
51
|
37
|
38
|
41
|
31
|
29
|
39
|
70
|
72
|
63
|
54
|
70
|
60
|
66
|
|
2025/12
|
50
|
37
|
22
|
39
|
30
|
62
|
55
|
31
|
57
|
76
|
39
|
43
|
67
|
105
|
68
|
59
|
87
|
57
|
39
|
34
|
44
|
32
|
42
|
65
|
37
|
42
|
50
|
73
|
28
|
21
|
40
|
|
2025/11
|
50
|
33
|
46
|
58
|
88
|
97
|
40
|
63
|
35
|
39
|
143
|
92
|
49
|
123
|
156
|
52
|
126
|
44
|
35
|
45
|
49
|
53
|
116
|
295
|
500
|
267
|
64
|
37
|
41
|
49
|
|
|
2025/10
|
36
|
49
|
34
|
30
|
21
|
21
|
24
|
31
|
39
|
38
|
19
|
40
|
127
|
255
|
70
|
58
|
75
|
31
|
23
|
24
|
33
|
42
|
62
|
67
|
69
|
39
|
32
|
78
|
150
|
45
|
38
|
|
2025/09
|
21
|
31
|
26
|
30
|
31
|
22
|
24
|
24
|
26
|
24
|
22
|
40
|
48
|
34
|
17
|
25
|
23
|
22
|
21
|
27
|
27
|
20
|
27
|
21
|
27
|
24
|
23
|
24
|
30
|
32
|
|
|
2025/08
|
43
|
34
|
20
|
19
|
21
|
20
|
19
|
19
|
24
|
18
|
26
|
25
|
23
|
21
|
29
|
21
|
16
|
23
|
34
|
26
|
20
|
19
|
27
|
17
|
17
|
25
|
20
|
21
|
23
|
29
|
29
|
|
2025/07
|
19
|
16
|
18
|
16
|
20
|
17
|
24
|
28
|
33
|
32
|
31
|
34
|
31
|
24
|
19
|
10
|
19
|
17
|
18
|
20
|
18
|
21
|
15
|
15
|
25
|
37
|
21
|
25
|
21
|
14
|
15
|
|
2025/06
|
34
|
40
|
18
|
28
|
25
|
30
|
27
|
26
|
38
|
20
|
26
|
20
|
29
|
33
|
31
|
19
|
37
|
27
|
31
|
29
|
14
|
20
|
27
|
37
|
40
|
38
|
53
|
28
|
36
|
34
|
|
|
2025/05
|
29
|
20
|
23
|
19
|
31
|
26
|
39
|
41
|
54
|
27
|
38
|
49
|
49
|
48
|
39
|
32
|
27
|
32
|
20
|
28
|
46
|
39
|
25
|
33
|
32
|
32
|
38
|
35
|
42
|
38
|
49
|
|
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