Air Quality
Excellent
No health implications.
3
PM2.5
5
PM10
31
O3
0.7
CO
3
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 May
46
Excellent
Tue
19 May
53
Good
Wed
20 May
56
Good
Thu
21 May
66
Good
Fri
22 May
66
Good
Sat
23 May
15
Excellent
Sun
24 May
34
Excellent
Air quality in the last 12 months (Sanhe)
|
2026/04
|
50
|
77
|
107
|
68
|
41
|
27
|
33
|
73
|
58
|
52
|
55
|
82
|
89
|
74
|
96
|
92
|
60
|
106
|
74
|
97
|
68
|
52
|
62
|
67
|
67
|
57
|
44
|
39
|
29
|
51
|
|
|
2026/03
|
105
|
114
|
104
|
63
|
76
|
49
|
76
|
66
|
27
|
95
|
95
|
94
|
86
|
55
|
58
|
73
|
137
|
36
|
51
|
58
|
97
|
124
|
124
|
142
|
169
|
181
|
49
|
69
|
87
|
29
|
53
|
|
2026/02
|
47
|
18
|
93
|
137
|
56
|
8
|
13
|
25
|
112
|
100
|
55
|
95
|
98
|
100
|
12
|
21
|
98
|
34
|
56
|
95
|
169
|
37
|
33
|
73
|
92
|
85
|
46
|
88
|
|||
|
2026/01
|
26
|
31
|
68
|
88
|
58
|
39
|
19
|
53
|
86
|
21
|
28
|
56
|
29
|
59
|
96
|
73
|
28
|
42
|
14
|
14
|
17
|
35
|
39
|
63
|
54
|
56
|
46
|
63
|
79
|
120
|
74
|
|
2025/12
|
33
|
19
|
29
|
37
|
51
|
93
|
57
|
29
|
62
|
103
|
79
|
40
|
36
|
46
|
96
|
89
|
95
|
192
|
178
|
17
|
29
|
68
|
64
|
23
|
22
|
60
|
76
|
150
|
38
|
25
|
20
|
|
2025/11
|
37
|
13
|
50
|
83
|
180
|
134
|
67
|
61
|
27
|
51
|
89
|
73
|
21
|
64
|
80
|
29
|
17
|
21
|
38
|
28
|
46
|
67
|
99
|
58
|
32
|
72
|
29
|
77
|
102
|
91
|
|
|
2025/10
|
46
|
46
|
47
|
53
|
54
|
21
|
42
|
26
|
8
|
12
|
20
|
34
|
49
|
47
|
63
|
69
|
29
|
13
|
13
|
16
|
24
|
50
|
65
|
92
|
133
|
35
|
34
|
120
|
183
|
139
|
69
|
|
2025/09
|
26
|
47
|
52
|
65
|
58
|
24
|
31
|
25
|
51
|
34
|
59
|
69
|
55
|
30
|
23
|
24
|
15
|
23
|
32
|
37
|
52
|
37
|
37
|
58
|
46
|
50
|
57
|
37
|
36
|
42
|
|
|
2025/08
|
54
|
54
|
28
|
36
|
21
|
38
|
37
|
33
|
16
|
30
|
41
|
44
|
15
|
33
|
42
|
28
|
36
|
36
|
23
|
24
|
32
|
20
|
22
|
17
|
24
|
31
|
22
|
10
|
39
|
36
|
25
|
|
2025/07
|
44
|
35
|
26
|
41
|
31
|
10
|
36
|
41
|
45
|
44
|
48
|
45
|
19
|
35
|
45
|
27
|
15
|
36
|
44
|
24
|
27
|
45
|
34
|
22
|
38
|
45
|
40
|
22
|
8
|
17
|
40
|
|
2025/06
|
60
|
36
|
11
|
25
|
57
|
39
|
34
|
46
|
47
|
30
|
51
|
65
|
59
|
58
|
17
|
15
|
45
|
67
|
52
|
26
|
21
|
40
|
63
|
77
|
59
|
60
|
77
|
54
|
95
|
52
|
|
|
2025/05
|
34
|
44
|
24
|
51
|
53
|
19
|
73
|
92
|
28
|
35
|
64
|
82
|
75
|
23
|
42
|
76
|
38
|
46
|
65
|
95
|
71
|
64
|
47
|
32
|
54
|
59
|
49
|
58
|
65
|
76
|
68
|
|
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