Air Quality
Excellent
No health implications.
8
PM2.5
14
PM10
43
O3
0.5
CO
6
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Oct
61
Good
Fri
16 Oct
55
Good
Sat
17 Oct
54
Good
Sun
18 Oct
63
Good
Mon
19 Oct
59
Good
Tue
20 Oct
42
Excellent
Wed
21 Oct
21
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