Air Quality
Excellent
No health implications.
19
PM2.5
22
PM10
84
O3
0.6
CO
5
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Sep
53
Good
Wed
17 Sep
50
Excellent
Thu
18 Sep
47
Excellent
Fri
19 Sep
50
Excellent
Sat
20 Sep
60
Good
Sun
21 Sep
55
Good
Mon
22 Sep
16
Excellent
Hejin Air quality rank
Air quality in the last 12 months (Hejin)
|
2025/08
|
37
|
42
|
42
|
42
|
33
|
38
|
40
|
33
|
30
|
35
|
40
|
45
|
52
|
48
|
34
|
18
|
30
|
36
|
32
|
30
|
34
|
48
|
33
|
28
|
44
|
41
|
31
|
24
|
29
|
43
|
44
|
|
2025/07
|
33
|
27
|
29
|
37
|
22
|
37
|
28
|
39
|
43
|
42
|
50
|
52
|
48
|
43
|
47
|
52
|
46
|
46
|
43
|
34
|
39
|
45
|
25
|
23
|
28
|
33
|
35
|
35
|
41
|
39
|
37
|
|
2025/06
|
49
|
48
|
46
|
56
|
50
|
58
|
68
|
58
|
63
|
60
|
60
|
51
|
54
|
43
|
45
|
49
|
49
|
41
|
32
|
46
|
37
|
41
|
42
|
44
|
51
|
33
|
42
|
28
|
37
|
32
|
|
|
2025/05
|
76
|
88
|
50
|
70
|
206
|
269
|
138
|
96
|
64
|
48
|
52
|
58
|
66
|
64
|
62
|
73
|
181
|
90
|
83
|
71
|
74
|
88
|
50
|
45
|
48
|
46
|
51
|
59
|
60
|
56
|
55
|
|
2025/04
|
79
|
77
|
73
|
98
|
71
|
88
|
101
|
99
|
94
|
66
|
132
|
214
|
144
|
64
|
60
|
106
|
130
|
94
|
69
|
69
|
88
|
158
|
121
|
69
|
66
|
66
|
60
|
53
|
61
|
120
|
|
|
2025/03
|
84
|
74
|
36
|
47
|
76
|
81
|
73
|
83
|
70
|
79
|
113
|
193
|
104
|
73
|
44
|
39
|
48
|
44
|
50
|
51
|
60
|
76
|
111
|
234
|
175
|
243
|
218
|
169
|
83
|
63
|
65
|
|
2025/02
|
165
|
127
|
34
|
49
|
39
|
87
|
57
|
38
|
64
|
83
|
85
|
80
|
78
|
88
|
92
|
77
|
78
|
88
|
79
|
83
|
103
|
105
|
61
|
62
|
75
|
70
|
77
|
87
|
|||
|
2025/01
|
131
|
88
|
90
|
120
|
115
|
58
|
61
|
61
|
56
|
78
|
79
|
67
|
97
|
76
|
41
|
66
|
109
|
116
|
118
|
126
|
140
|
144
|
146
|
106
|
57
|
74
|
35
|
79
|
172
|
139
|
169
|
|
2024/12
|
81
|
73
|
64
|
78
|
64
|
72
|
55
|
59
|
80
|
96
|
95
|
113
|
68
|
60
|
74
|
91
|
107
|
78
|
71
|
88
|
46
|
76
|
109
|
136
|
145
|
98
|
61
|
62
|
90
|
101
|
91
|
|
2024/11
|
90
|
84
|
88
|
68
|
69
|
72
|
84
|
83
|
76
|
111
|
115
|
124
|
63
|
54
|
73
|
67
|
46
|
49
|
49
|
67
|
80
|
102
|
105
|
105
|
47
|
46
|
71
|
55
|
51
|
65
|
|
|
2024/10
|
70
|
58
|
56
|
59
|
65
|
86
|
90
|
80
|
104
|
71
|
72
|
69
|
65
|
97
|
82
|
113
|
65
|
42
|
30
|
24
|
41
|
34
|
54
|
64
|
66
|
74
|
60
|
68
|
81
|
75
|
84
|
|
2024/09
|
53
|
46
|
40
|
45
|
37
|
39
|
39
|
48
|
46
|
51
|
43
|
35
|
48
|
40
|
46
|
37
|
41
|
52
|
37
|
38
|
27
|
48
|
52
|
72
|
100
|
77
|
81
|
61
|
38
|
21
|
|
|
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