Air Quality
Excellent
No health implications.
10
PM2.5
13
PM10
46
O3
0.4
CO
3
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Apr
52
Good
Thu
16 Apr
53
Good
Fri
17 Apr
55
Good
Sat
18 Apr
59
Good
Sun
19 Apr
51
Good
Mon
20 Apr
56
Good
Tue
21 Apr
23
Excellent
Air quality in the last 12 months (Hecheng)
|
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
|
|
|
2025/05
|
43
|
61
|
56
|
48
|
40
|
51
|
58
|
36
|
22
|
32
|
36
|
56
|
58
|
60
|
54
|
32
|
48
|
38
|
42
|
31
|
25
|
26
|
38
|
51
|
52
|
33
|
29
|
14
|
30
|
28
|
21
|
|
2025/04
|
50
|
57
|
69
|
79
|
84
|
79
|
73
|
86
|
74
|
62
|
57
|
49
|
123
|
110
|
88
|
82
|
71
|
64
|
26
|
36
|
43
|
32
|
54
|
32
|
43
|
41
|
28
|
41
|
56
|
29
|
|
|
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