Air Quality
Excellent
No health implications.
22
PM2.5
34
PM10
67
O3
0.5
CO
4
SO2
24
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
5 Sep
59
Good
Sat
6 Sep
57
Good
Sun
7 Sep
58
Good
Mon
8 Sep
83
Good
Tue
9 Sep
84
Good
Wed
10 Sep
81
Good
Thu
11 Sep
35
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