Air Quality
Excellent
No health implications.
19
PM2.5
43
PM10
54
O3
0.7
CO
4
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Feb
92
Good
Mon
16 Feb
133
Light
Tue
17 Feb
145
Light
Wed
18 Feb
107
Light
Thu
19 Feb
85
Good
Fri
20 Feb
96
Good
Sat
21 Feb
30
Excellent
Air quality in the last 12 months (Hejin)
|
2026/01
|
90
|
115
|
155
|
137
|
81
|
41
|
58
|
68
|
70
|
77
|
60
|
79
|
100
|
119
|
127
|
99
|
93
|
96
|
48
|
34
|
51
|
71
|
110
|
110
|
112
|
142
|
132
|
135
|
111
|
140
|
148
|
|
2025/12
|
88
|
62
|
53
|
81
|
91
|
117
|
115
|
87
|
104
|
126
|
119
|
58
|
94
|
124
|
112
|
132
|
110
|
90
|
101
|
56
|
65
|
79
|
105
|
98
|
57
|
69
|
86
|
112
|
112
|
90
|
70
|
|
2025/11
|
76
|
80
|
71
|
80
|
78
|
66
|
47
|
47
|
83
|
88
|
92
|
85
|
61
|
85
|
100
|
78
|
23
|
29
|
60
|
72
|
80
|
96
|
101
|
123
|
93
|
162
|
235
|
137
|
126
|
110
|
|
|
2025/10
|
48
|
35
|
43
|
43
|
40
|
21
|
23
|
25
|
20
|
20
|
20
|
23
|
37
|
50
|
33
|
35
|
25
|
26
|
42
|
31
|
34
|
51
|
66
|
72
|
44
|
58
|
61
|
70
|
77
|
99
|
76
|
|
2025/09
|
44
|
39
|
19
|
15
|
32
|
53
|
64
|
57
|
43
|
42
|
26
|
26
|
42
|
52
|
47
|
39
|
25
|
20
|
24
|
49
|
25
|
23
|
29
|
41
|
46
|
38
|
38
|
52
|
51
|
62
|
|
|
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
|
|||
|
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