Air Quality
Excellent
No health implications.
23
PM2.5
28
PM10
17
O3
0.4
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 Mar
49
Excellent
Thu
26 Mar
45
Excellent
Fri
27 Mar
44
Excellent
Sat
28 Mar
41
Excellent
Sun
29 Mar
48
Excellent
Mon
30 Mar
43
Excellent
Tue
31 Mar
38
Excellent
Hecheng Air quality rank
Air quality in the last 12 months (Hecheng)
|
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
|
|
|
2025/03
|
37
|
30
|
14
|
21
|
24
|
33
|
26
|
38
|
46
|
42
|
33
|
38
|
46
|
25
|
19
|
44
|
42
|
37
|
41
|
45
|
54
|
63
|
69
|
65
|
70
|
76
|
90
|
78
|
45
|
21
|
42
|
|
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