Air Quality
Excellent
No health implications.
23
PM2.5
25
PM10
82
O3
0.5
CO
5
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 Sep
53
Good
Sat
5 Sep
48
Excellent
Sun
6 Sep
59
Good
Mon
7 Sep
58
Good
Tue
8 Sep
62
Good
Wed
9 Sep
60
Good
Thu
10 Sep
48
Excellent
Air quality in the last 12 months (Hecheng)
|
2026/08
|
17
|
19
|
22
|
28
|
21
|
24
|
32
|
38
|
40
|
37
|
30
|
24
|
19
|
20
|
32
|
39
|
38
|
40
|
35
|
41
|
44
|
38
|
32
|
32
|
23
|
33
|
37
|
30
|
33
|
26
|
41
|
|
2026/07
|
23
|
25
|
22
|
25
|
16
|
17
|
19
|
20
|
18
|
18
|
27
|
27
|
29
|
34
|
34
|
19
|
20
|
19
|
20
|
31
|
30
|
26
|
24
|
25
|
31
|
32
|
22
|
20
|
23
|
18
|
14
|
|
2026/06
|
34
|
41
|
36
|
31
|
39
|
40
|
27
|
29
|
26
|
28
|
32
|
30
|
20
|
24
|
32
|
36
|
41
|
40
|
16
|
17
|
17
|
21
|
19
|
19
|
21
|
30
|
38
|
40
|
40
|
23
|
|
|
2026/05
|
39
|
36
|
28
|
36
|
38
|
45
|
40
|
32
|
33
|
41
|
54
|
48
|
19
|
29
|
39
|
62
|
37
|
18
|
18
|
21
|
27
|
29
|
40
|
37
|
28
|
30
|
22
|
27
|
25
|
34
|
38
|
|
2026/04
|
35
|
34
|
23
|
45
|
66
|
30
|
44
|
63
|
71
|
47
|
25
|
29
|
30
|
24
|
18
|
19
|
29
|
39
|
48
|
29
|
21
|
16
|
23
|
30
|
46
|
54
|
33
|
22
|
28
|
34
|
|
|
2026/03
|
10
|
17
|
29
|
36
|
37
|
53
|
52
|
16
|
27
|
64
|
38
|
59
|
66
|
61
|
50
|
16
|
14
|
21
|
40
|
32
|
36
|
21
|
23
|
23
|
29
|
24
|
21
|
32
|
36
|
20
|
29
|
|
2026/02
|
61
|
80
|
77
|
94
|
91
|
93
|
94
|
67
|
49
|
41
|
53
|
75
|
67
|
55
|
60
|
22
|
47
|
64
|
48
|
43
|
58
|
55
|
31
|
46
|
59
|
19
|
17
|
19
|
|||
|
2026/01
|
29
|
48
|
46
|
35
|
49
|
51
|
61
|
75
|
78
|
121
|
114
|
117
|
108
|
96
|
121
|
152
|
136
|
144
|
52
|
30
|
44
|
62
|
75
|
87
|
65
|
35
|
73
|
88
|
69
|
17
|
50
|
|
2025/12
|
67
|
94
|
71
|
62
|
59
|
62
|
65
|
70
|
78
|
94
|
93
|
140
|
36
|
51
|
60
|
67
|
67
|
88
|
76
|
65
|
45
|
50
|
35
|
41
|
64
|
61
|
61
|
72
|
91
|
103
|
90
|
|
2025/11
|
38
|
25
|
17
|
24
|
29
|
21
|
16
|
10
|
10
|
12
|
41
|
47
|
44
|
47
|
55
|
61
|
49
|
25
|
37
|
45
|
41
|
49
|
45
|
44
|
56
|
56
|
68
|
65
|
59
|
63
|
|
|
2025/10
|
47
|
29
|
30
|
29
|
37
|
22
|
28
|
46
|
36
|
36
|
39
|
57
|
35
|
25
|
35
|
22
|
22
|
11
|
9
|
8
|
11
|
29
|
41
|
40
|
51
|
37
|
31
|
49
|
56
|
52
|
38
|
|
2025/09
|
30
|
28
|
28
|
24
|
43
|
46
|
37
|
39
|
17
|
21
|
21
|
19
|
21
|
26
|
30
|
26
|
24
|
23
|
22
|
16
|
35
|
25
|
20
|
17
|
20
|
14
|
25
|
41
|
32
|
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