Air Quality
Excellent
No health implications.
3
PM2.5
8
PM10
14
O3
0.5
CO
8
SO2
23
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
21 Jun
47
Excellent
Mon
22 Jun
45
Excellent
Tue
23 Jun
49
Excellent
Wed
24 Jun
51
Good
Thu
25 Jun
46
Excellent
Fri
26 Jun
18
Excellent
Sat
27 Jun
20
Excellent
Air quality in the last 12 months (Hecheng)
|
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
|
|
|
2025/08
|
31
|
39
|
36
|
31
|
33
|
24
|
15
|
21
|
23
|
23
|
33
|
26
|
19
|
17
|
14
|
19
|
32
|
34
|
23
|
25
|
17
|
19
|
24
|
27
|
23
|
25
|
27
|
26
|
37
|
37
|
31
|
|
2025/07
|
20
|
16
|
18
|
21
|
25
|
33
|
37
|
36
|
42
|
31
|
31
|
41
|
39
|
29
|
23
|
27
|
27
|
31
|
35
|
37
|
11
|
12
|
12
|
24
|
21
|
35
|
33
|
30
|
35
|
34
|
31
|
|
2025/06
|
19
|
24
|
37
|
39
|
40
|
38
|
25
|
20
|
30
|
38
|
38
|
29
|
30
|
21
|
23
|
34
|
19
|
14
|
10
|
11
|
13
|
12
|
12
|
11
|
24
|
28
|
25
|
19
|
22
|
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