Air Quality
Excellent
No health implications.
11
PM2.5
19
PM10
62
O3
0.5
CO
5
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
13 Sep
85
Good
Sun
14 Sep
57
Good
Mon
15 Sep
57
Good
Tue
16 Sep
58
Good
Wed
17 Sep
58
Good
Thu
18 Sep
46
Excellent
Fri
19 Sep
46
Excellent
Air quality in the last 12 months (Guyang)
|
2025/08
|
32
|
34
|
34
|
41
|
46
|
31
|
28
|
22
|
31
|
27
|
45
|
48
|
30
|
41
|
40
|
20
|
36
|
25
|
18
|
29
|
37
|
39
|
31
|
37
|
31
|
30
|
25
|
41
|
38
|
44
|
40
|
|
2025/07
|
30
|
29
|
44
|
35
|
13
|
24
|
30
|
35
|
25
|
31
|
21
|
50
|
38
|
38
|
37
|
16
|
24
|
42
|
19
|
11
|
25
|
37
|
36
|
30
|
19
|
19
|
21
|
31
|
19
|
19
|
26
|
|
2025/06
|
28
|
23
|
20
|
23
|
33
|
30
|
23
|
27
|
29
|
25
|
46
|
52
|
31
|
19
|
15
|
21
|
38
|
38
|
15
|
24
|
29
|
30
|
35
|
42
|
42
|
30
|
39
|
34
|
42
|
31
|
|
|
2025/05
|
43
|
39
|
23
|
85
|
138
|
54
|
75
|
66
|
33
|
30
|
53
|
65
|
53
|
18
|
47
|
158
|
27
|
64
|
58
|
64
|
32
|
15
|
40
|
47
|
55
|
35
|
41
|
53
|
55
|
37
|
15
|
|
2025/04
|
33
|
34
|
106
|
58
|
44
|
80
|
48
|
48
|
47
|
59
|
175
|
48
|
45
|
22
|
56
|
158
|
34
|
41
|
58
|
65
|
56
|
63
|
51
|
36
|
50
|
59
|
14
|
41
|
67
|
44
|
|
|
2025/03
|
73
|
35
|
38
|
88
|
37
|
31
|
48
|
71
|
84
|
130
|
207
|
89
|
60
|
53
|
27
|
35
|
33
|
27
|
37
|
35
|
55
|
82
|
210
|
181
|
98
|
192
|
97
|
29
|
20
|
32
|
47
|
|
2025/02
|
92
|
25
|
15
|
30
|
44
|
67
|
19
|
27
|
54
|
68
|
67
|
75
|
78
|
87
|
89
|
28
|
47
|
22
|
23
|
24
|
33
|
18
|
26
|
63
|
57
|
67
|
78
|
71
|
|||
|
2025/01
|
76
|
28
|
53
|
69
|
68
|
32
|
40
|
19
|
38
|
58
|
58
|
42
|
71
|
20
|
58
|
72
|
90
|
76
|
70
|
96
|
71
|
72
|
108
|
94
|
112
|
116
|
22
|
73
|
275
|
181
|
90
|
|
2024/12
|
50
|
29
|
43
|
26
|
38
|
25
|
23
|
48
|
68
|
57
|
58
|
79
|
64
|
55
|
66
|
72
|
32
|
39
|
72
|
32
|
24
|
62
|
64
|
75
|
52
|
26
|
42
|
73
|
154
|
83
|
75
|
|
2024/11
|
75
|
79
|
30
|
27
|
51
|
66
|
80
|
84
|
79
|
46
|
67
|
63
|
73
|
91
|
87
|
66
|
47
|
61
|
61
|
84
|
68
|
67
|
88
|
64
|
34
|
48
|
43
|
41
|
48
|
59
|
|
|
2024/10
|
15
|
30
|
44
|
56
|
56
|
23
|
38
|
48
|
47
|
35
|
58
|
60
|
36
|
46
|
24
|
72
|
77
|
20
|
28
|
37
|
38
|
34
|
49
|
62
|
61
|
32
|
29
|
55
|
47
|
51
|
63
|
|
2024/09
|
15
|
24
|
45
|
29
|
15
|
22
|
28
|
45
|
46
|
28
|
24
|
33
|
19
|
14
|
28
|
22
|
31
|
50
|
51
|
10
|
11
|
29
|
47
|
46
|
31
|
45
|
56
|
58
|
19
|
28
|
|
|
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