Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
36
PM2.5
59
PM10
172
O3
0.5
CO
7
SO2
9
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
15 Jul
108
Light
Wed
16 Jul
70
Good
Thu
17 Jul
102
Light
Fri
18 Jul
117
Light
Sat
19 Jul
147
Light
Sun
20 Jul
71
Good
Mon
21 Jul
22
Excellent
Air quality in the last 12 months (Hejian)
|
2025/06
|
86
|
78
|
43
|
40
|
63
|
79
|
74
|
64
|
74
|
45
|
71
|
86
|
79
|
51
|
36
|
32
|
57
|
72
|
46
|
41
|
49
|
50
|
65
|
56
|
70
|
64
|
58
|
58
|
50
|
36
|
|
|
2025/05
|
55
|
70
|
44
|
53
|
63
|
43
|
77
|
79
|
42
|
37
|
58
|
69
|
72
|
58
|
41
|
83
|
104
|
68
|
100
|
102
|
79
|
72
|
71
|
57
|
59
|
73
|
68
|
69
|
72
|
70
|
66
|
|
2025/04
|
72
|
34
|
61
|
96
|
44
|
79
|
91
|
74
|
57
|
77
|
141
|
172
|
57
|
50
|
60
|
91
|
101
|
60
|
45
|
71
|
78
|
61
|
78
|
57
|
70
|
90
|
85
|
68
|
70
|
84
|
|
|
2025/03
|
217
|
87
|
54
|
48
|
75
|
50
|
94
|
118
|
111
|
113
|
138
|
143
|
133
|
79
|
51
|
35
|
55
|
36
|
53
|
55
|
56
|
70
|
124
|
116
|
67
|
93
|
95
|
53
|
34
|
63
|
74
|
|
2025/02
|
71
|
96
|
36
|
30
|
38
|
90
|
34
|
28
|
60
|
110
|
141
|
99
|
78
|
99
|
107
|
51
|
41
|
59
|
70
|
69
|
64
|
53
|
39
|
67
|
85
|
84
|
150
|
198
|
|||
|
2025/01
|
116
|
46
|
66
|
126
|
123
|
38
|
51
|
44
|
36
|
62
|
79
|
70
|
87
|
92
|
44
|
66
|
81
|
135
|
115
|
94
|
119
|
56
|
65
|
84
|
107
|
107
|
28
|
79
|
287
|
77
|
71
|
|
2024/12
|
112
|
39
|
61
|
91
|
79
|
61
|
34
|
56
|
97
|
96
|
62
|
89
|
72
|
56
|
58
|
73
|
55
|
34
|
61
|
82
|
37
|
54
|
77
|
114
|
144
|
49
|
58
|
58
|
83
|
112
|
85
|
|
2024/11
|
84
|
79
|
102
|
42
|
54
|
71
|
103
|
99
|
88
|
131
|
146
|
151
|
138
|
46
|
70
|
80
|
58
|
57
|
74
|
81
|
72
|
53
|
63
|
104
|
60
|
35
|
38
|
43
|
53
|
73
|
|
|
2024/10
|
28
|
27
|
47
|
66
|
79
|
109
|
61
|
77
|
123
|
69
|
81
|
126
|
151
|
173
|
121
|
59
|
96
|
49
|
29
|
40
|
66
|
65
|
70
|
131
|
134
|
171
|
115
|
67
|
115
|
208
|
182
|
|
2024/09
|
46
|
31
|
38
|
56
|
38
|
35
|
45
|
54
|
66
|
31
|
35
|
40
|
53
|
50
|
48
|
47
|
65
|
54
|
48
|
35
|
18
|
21
|
39
|
61
|
70
|
73
|
56
|
67
|
75
|
17
|
|
|
2024/08
|
37
|
45
|
36
|
27
|
21
|
40
|
47
|
50
|
48
|
76
|
32
|
27
|
25
|
34
|
45
|
41
|
45
|
26
|
17
|
27
|
28
|
43
|
51
|
36
|
44
|
19
|
24
|
39
|
45
|
57
|
59
|
|
2024/07
|
48
|
51
|
47
|
65
|
50
|
30
|
57
|
44
|
62
|
58
|
64
|
67
|
70
|
86
|
57
|
51
|
44
|
45
|
43
|
26
|
37
|
36
|
35
|
47
|
17
|
23
|
34
|
25
|
25
|
17
|
27
|
|
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