Air Quality
Excellent
No health implications.
8
PM2.5
13
PM10
35
O3
0.5
CO
7
SO2
11
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Oct
48
Excellent
Sat
17 Oct
51
Good
Sun
18 Oct
57
Good
Mon
19 Oct
63
Good
Tue
20 Oct
47
Excellent
Wed
21 Oct
21
Excellent
Thu
22 Oct
19
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