Air Quality
Excellent
No health implications.
24
PM2.5
37
PM10
56
O3
0.7
CO
9
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 May
57
Good
Sun
17 May
46
Excellent
Mon
18 May
42
Excellent
Tue
19 May
55
Good
Wed
20 May
57
Good
Thu
21 May
59
Good
Fri
22 May
29
Excellent
Air quality in the last 12 months (Gucheng)
|
2026/04
|
52
|
46
|
43
|
75
|
74
|
79
|
77
|
52
|
31
|
51
|
60
|
50
|
42
|
44
|
50
|
39
|
54
|
61
|
74
|
117
|
44
|
22
|
28
|
45
|
44
|
59
|
58
|
53
|
41
|
43
|
|
|
2026/03
|
34
|
36
|
51
|
69
|
87
|
85
|
88
|
73
|
84
|
109
|
112
|
186
|
94
|
97
|
31
|
42
|
67
|
52
|
81
|
79
|
74
|
70
|
91
|
77
|
65
|
77
|
50
|
50
|
59
|
39
|
55
|
|
2026/02
|
98
|
93
|
103
|
141
|
134
|
115
|
89
|
94
|
81
|
91
|
98
|
90
|
96
|
102
|
87
|
36
|
98
|
63
|
70
|
61
|
61
|
99
|
142
|
76
|
49
|
30
|
54
|
57
|
|||
|
2026/01
|
48
|
81
|
116
|
95
|
62
|
43
|
51
|
59
|
68
|
72
|
77
|
77
|
103
|
110
|
85
|
90
|
122
|
90
|
52
|
60
|
68
|
76
|
82
|
97
|
111
|
121
|
115
|
141
|
110
|
104
|
86
|
|
2025/12
|
121
|
128
|
83
|
77
|
86
|
90
|
86
|
79
|
102
|
132
|
157
|
97
|
55
|
60
|
64
|
82
|
104
|
119
|
120
|
98
|
45
|
69
|
63
|
83
|
72
|
74
|
81
|
95
|
94
|
112
|
115
|
|
2025/11
|
40
|
56
|
93
|
117
|
109
|
102
|
26
|
26
|
51
|
72
|
67
|
66
|
72
|
93
|
92
|
75
|
31
|
24
|
31
|
45
|
52
|
63
|
58
|
79
|
58
|
73
|
137
|
92
|
76
|
77
|
|
|
2025/10
|
20
|
8
|
17
|
18
|
16
|
13
|
22
|
24
|
27
|
18
|
18
|
23
|
15
|
25
|
25
|
31
|
15
|
27
|
47
|
36
|
34
|
48
|
57
|
89
|
58
|
38
|
52
|
63
|
102
|
80
|
48
|
|
2025/09
|
19
|
27
|
36
|
28
|
19
|
24
|
31
|
14
|
19
|
27
|
13
|
12
|
21
|
31
|
27
|
32
|
14
|
11
|
9
|
17
|
25
|
18
|
9
|
13
|
22
|
13
|
12
|
14
|
13
|
14
|
|
|
2025/08
|
31
|
32
|
35
|
43
|
41
|
40
|
29
|
31
|
21
|
16
|
18
|
22
|
14
|
22
|
24
|
18
|
23
|
23
|
29
|
21
|
24
|
29
|
27
|
27
|
27
|
29
|
33
|
30
|
20
|
20
|
14
|
|
2025/07
|
21
|
22
|
18
|
23
|
22
|
26
|
19
|
31
|
29
|
26
|
45
|
46
|
35
|
28
|
28
|
34
|
24
|
29
|
31
|
30
|
28
|
29
|
14
|
19
|
25
|
28
|
27
|
24
|
25
|
27
|
31
|
|
2025/06
|
27
|
27
|
36
|
37
|
38
|
39
|
33
|
23
|
29
|
38
|
39
|
33
|
41
|
35
|
44
|
52
|
42
|
25
|
11
|
19
|
25
|
31
|
29
|
27
|
21
|
13
|
24
|
27
|
21
|
25
|
|
|
2025/05
|
82
|
79
|
63
|
41
|
54
|
305
|
182
|
54
|
66
|
41
|
41
|
57
|
58
|
42
|
55
|
49
|
80
|
140
|
87
|
73
|
62
|
53
|
57
|
65
|
63
|
54
|
52
|
47
|
46
|
33
|
18
|
|
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