Air Quality
Excellent
No health implications.
26
PM2.5
40
PM10
20
O3
0.3
CO
8
SO2
53
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
70
Good
Mon
26 May
87
Good
Tue
27 May
100
Good
Wed
28 May
104
Light
Thu
29 May
100
Good
Fri
30 May
37
Excellent
Sat
31 May
35
Excellent
Air quality in the last 12 months (Kaiyuan)
|
2025/04
|
88
|
74
|
73
|
65
|
38
|
51
|
62
|
66
|
82
|
80
|
60
|
30
|
13
|
23
|
48
|
47
|
61
|
37
|
40
|
54
|
67
|
21
|
45
|
76
|
63
|
79
|
47
|
54
|
70
|
58
|
|
|
2025/03
|
92
|
29
|
41
|
59
|
82
|
76
|
61
|
88
|
107
|
90
|
70
|
117
|
39
|
46
|
54
|
60
|
83
|
71
|
78
|
85
|
85
|
189
|
178
|
94
|
129
|
174
|
56
|
30
|
31
|
39
|
63
|
|
2025/02
|
120
|
165
|
78
|
69
|
61
|
65
|
56
|
53
|
74
|
64
|
68
|
49
|
71
|
81
|
95
|
52
|
34
|
33
|
46
|
56
|
54
|
60
|
57
|
59
|
96
|
64
|
86
|
125
|
|||
|
2025/01
|
47
|
39
|
55
|
69
|
98
|
118
|
57
|
36
|
64
|
70
|
73
|
89
|
95
|
74
|
41
|
52
|
63
|
68
|
76
|
61
|
73
|
88
|
102
|
78
|
79
|
98
|
126
|
65
|
100
|
83
|
94
|
|
2024/12
|
30
|
21
|
39
|
32
|
41
|
33
|
51
|
57
|
65
|
70
|
45
|
68
|
76
|
57
|
42
|
39
|
43
|
60
|
53
|
64
|
72
|
63
|
66
|
53
|
73
|
43
|
46
|
51
|
58
|
67
|
46
|
|
2024/11
|
74
|
96
|
106
|
31
|
37
|
36
|
47
|
65
|
61
|
46
|
39
|
48
|
44
|
34
|
33
|
34
|
27
|
26
|
38
|
78
|
73
|
58
|
91
|
68
|
49
|
25
|
39
|
43
|
49
|
51
|
|
|
2024/10
|
20
|
24
|
33
|
43
|
49
|
54
|
32
|
46
|
43
|
25
|
43
|
47
|
73
|
47
|
18
|
36
|
68
|
49
|
28
|
42
|
29
|
31
|
40
|
63
|
100
|
86
|
33
|
52
|
79
|
99
|
103
|
|
2024/09
|
21
|
18
|
24
|
35
|
20
|
27
|
26
|
29
|
36
|
20
|
23
|
23
|
33
|
17
|
23
|
30
|
43
|
35
|
28
|
11
|
18
|
28
|
30
|
39
|
25
|
20
|
32
|
39
|
43
|
17
|
|
|
2024/08
|
18
|
17
|
25
|
31
|
18
|
26
|
40
|
42
|
33
|
22
|
23
|
20
|
20
|
26
|
30
|
27
|
31
|
33
|
29
|
22
|
13
|
14
|
22
|
32
|
20
|
24
|
19
|
23
|
29
|
39
|
30
|
|
2024/07
|
59
|
49
|
14
|
45
|
51
|
39
|
30
|
54
|
46
|
50
|
61
|
64
|
65
|
56
|
60
|
36
|
14
|
42
|
41
|
17
|
33
|
21
|
31
|
22
|
20
|
9
|
14
|
12
|
22
|
42
|
21
|
|
2024/06
|
21
|
19
|
26
|
41
|
46
|
39
|
35
|
29
|
29
|
35
|
45
|
43
|
36
|
26
|
17
|
29
|
45
|
45
|
46
|
39
|
40
|
44
|
42
|
11
|
25
|
31
|
49
|
38
|
28
|
28
|
|
|
2024/05
|
40
|
60
|
62
|
58
|
35
|
48
|
45
|
44
|
70
|
71
|
85
|
34
|
47
|
63
|
31
|
20
|
44
|
53
|
27
|
18
|
36
|
44
|
25
|
24
|
22
|
15
|
15
|
27
|
47
|
39
|
15
|
|
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