Air Quality
Excellent
No health implications.
11
PM2.5
19
PM10
72
O3
0.3
CO
4
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Jun
75
Good
Thu
19 Jun
49
Excellent
Fri
20 Jun
50
Excellent
Sat
21 Jun
55
Good
Sun
22 Jun
81
Good
Mon
23 Jun
91
Good
Tue
24 Jun
24
Excellent
Air quality in the last 12 months (Guoyang)
|
2025/05
|
59
|
77
|
45
|
48
|
46
|
106
|
80
|
58
|
43
|
27
|
46
|
52
|
50
|
56
|
87
|
63
|
104
|
80
|
80
|
56
|
46
|
59
|
70
|
63
|
56
|
60
|
71
|
67
|
72
|
65
|
83
|
|
2025/04
|
68
|
56
|
57
|
71
|
89
|
80
|
70
|
78
|
88
|
99
|
73
|
223
|
95
|
58
|
55
|
62
|
76
|
76
|
58
|
57
|
51
|
71
|
83
|
90
|
63
|
57
|
59
|
51
|
56
|
60
|
|
|
2025/03
|
117
|
61
|
37
|
57
|
66
|
80
|
66
|
85
|
100
|
93
|
105
|
139
|
106
|
49
|
60
|
48
|
51
|
53
|
60
|
56
|
51
|
61
|
75
|
137
|
69
|
71
|
122
|
147
|
86
|
69
|
74
|
|
2025/02
|
118
|
124
|
136
|
83
|
59
|
55
|
81
|
45
|
57
|
66
|
94
|
114
|
122
|
77
|
91
|
82
|
61
|
68
|
80
|
52
|
54
|
82
|
95
|
45
|
67
|
103
|
96
|
102
|
|||
|
2025/01
|
108
|
179
|
125
|
152
|
139
|
76
|
63
|
66
|
48
|
61
|
76
|
71
|
96
|
143
|
58
|
69
|
95
|
106
|
133
|
132
|
149
|
196
|
102
|
65
|
52
|
82
|
45
|
87
|
218
|
99
|
134
|
|
2024/12
|
75
|
103
|
65
|
91
|
127
|
123
|
120
|
50
|
64
|
85
|
104
|
100
|
103
|
79
|
67
|
79
|
96
|
62
|
60
|
98
|
80
|
60
|
87
|
115
|
132
|
164
|
106
|
74
|
64
|
92
|
113
|
|
2024/11
|
116
|
112
|
100
|
85
|
61
|
76
|
55
|
49
|
57
|
71
|
57
|
70
|
74
|
78
|
85
|
66
|
40
|
36
|
34
|
43
|
58
|
83
|
51
|
48
|
47
|
49
|
67
|
59
|
53
|
69
|
|
|
2024/10
|
35
|
47
|
47
|
52
|
43
|
38
|
24
|
57
|
59
|
83
|
94
|
86
|
81
|
86
|
95
|
80
|
44
|
20
|
39
|
42
|
59
|
68
|
70
|
56
|
62
|
66
|
115
|
122
|
115
|
85
|
71
|
|
2024/09
|
41
|
41
|
34
|
40
|
51
|
34
|
41
|
39
|
31
|
38
|
49
|
23
|
35
|
52
|
30
|
47
|
23
|
20
|
20
|
24
|
29
|
30
|
41
|
48
|
51
|
53
|
47
|
42
|
41
|
42
|
|
|
2024/08
|
19
|
17
|
23
|
26
|
25
|
15
|
21
|
26
|
35
|
52
|
94
|
44
|
47
|
40
|
31
|
30
|
29
|
35
|
26
|
28
|
38
|
42
|
38
|
44
|
46
|
40
|
14
|
25
|
30
|
32
|
35
|
|
2024/07
|
29
|
30
|
28
|
10
|
20
|
15
|
22
|
26
|
16
|
50
|
47
|
33
|
25
|
21
|
14
|
28
|
19
|
15
|
19
|
16
|
21
|
24
|
27
|
34
|
26
|
20
|
15
|
14
|
12
|
17
|
21
|
|
2024/06
|
60
|
65
|
75
|
73
|
69
|
55
|
46
|
59
|
64
|
51
|
37
|
43
|
50
|
52
|
59
|
55
|
47
|
46
|
47
|
48
|
28
|
40
|
43
|
77
|
85
|
50
|
55
|
22
|
19
|
25
|
|
|
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