Air Quality
Excellent
No health implications.
35
PM2.5
48
PM10
17
O3
0.9
CO
28
SO2
48
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
126
Light
Mon
5 May
158
Moderate
Tue
6 May
63
Good
Wed
7 May
112
Light
Thu
8 May
74
Good
Fri
9 May
63
Good
Sat
10 May
28
Excellent
Air quality in the last 12 months (Jiuyuan)
|
2025/02
|
83
|
26
|
20
|
36
|
45
|
81
|
28
|
31
|
53
|
74
|
66
|
78
|
64
|
89
|
86
|
34
|
62
|
26
|
39
|
31
|
42
|
22
|
30
|
65
|
57
|
73
|
82
|
77
|
|||
|
2025/01
|
79
|
29
|
56
|
84
|
76
|
42
|
47
|
23
|
44
|
61
|
63
|
41
|
82
|
24
|
65
|
76
|
79
|
86
|
72
|
82
|
81
|
82
|
119
|
110
|
112
|
138
|
28
|
70
|
319
|
131
|
102
|
|
2024/12
|
52
|
33
|
59
|
34
|
45
|
31
|
29
|
58
|
61
|
75
|
59
|
97
|
86
|
62
|
67
|
73
|
42
|
46
|
75
|
41
|
26
|
63
|
63
|
74
|
62
|
33
|
61
|
66
|
204
|
89
|
71
|
|
2024/11
|
69
|
72
|
32
|
23
|
54
|
59
|
69
|
72
|
71
|
45
|
71
|
65
|
67
|
73
|
76
|
88
|
47
|
61
|
50
|
79
|
70
|
69
|
76
|
59
|
44
|
67
|
51
|
49
|
68
|
64
|
|
|
2024/10
|
21
|
30
|
47
|
52
|
55
|
25
|
40
|
53
|
47
|
37
|
57
|
58
|
33
|
44
|
26
|
66
|
75
|
21
|
29
|
33
|
37
|
31
|
45
|
62
|
57
|
42
|
32
|
54
|
49
|
46
|
56
|
|
2024/09
|
14
|
22
|
41
|
22
|
16
|
19
|
37
|
41
|
50
|
34
|
27
|
31
|
17
|
14
|
29
|
26
|
31
|
48
|
53
|
13
|
15
|
29
|
46
|
47
|
37
|
48
|
54
|
56
|
22
|
33
|
|
|
2024/08
|
33
|
42
|
23
|
27
|
31
|
33
|
24
|
31
|
47
|
39
|
11
|
11
|
21
|
27
|
35
|
35
|
26
|
39
|
22
|
25
|
24
|
29
|
38
|
54
|
28
|
12
|
28
|
41
|
45
|
49
|
43
|
|
2024/07
|
19
|
29
|
35
|
26
|
52
|
42
|
31
|
44
|
52
|
41
|
54
|
36
|
33
|
48
|
41
|
13
|
27
|
28
|
50
|
38
|
118
|
57
|
47
|
49
|
38
|
33
|
27
|
25
|
38
|
22
|
28
|
|
2024/06
|
44
|
62
|
45
|
33
|
38
|
41
|
35
|
49
|
48
|
37
|
64
|
65
|
53
|
16
|
24
|
37
|
55
|
45
|
37
|
41
|
45
|
238
|
168
|
80
|
40
|
66
|
52
|
51
|
20
|
29
|
|
|
2024/05
|
45
|
59
|
57
|
43
|
51
|
46
|
37
|
55
|
65
|
143
|
48
|
34
|
48
|
95
|
45
|
80
|
83
|
114
|
165
|
60
|
67
|
63
|
64
|
55
|
44
|
19
|
36
|
48
|
70
|
53
|
17
|
|
2024/04
|
75
|
51
|
45
|
66
|
46
|
49
|
56
|
66
|
66
|
86
|
83
|
98
|
69
|
287
|
116
|
46
|
69
|
80
|
65
|
28
|
65
|
160
|
40
|
99
|
245
|
76
|
120
|
38
|
21
|
28
|
|
|
2024/03
|
60
|
84
|
66
|
73
|
30
|
39
|
43
|
47
|
65
|
81
|
32
|
42
|
68
|
76
|
82
|
234
|
50
|
157
|
44
|
55
|
113
|
61
|
81
|
70
|
61
|
76
|
248
|
338
|
108
|
42
|
66
|
|
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