Air Quality
Excellent
No health implications.
3
PM2.5
11
PM10
20
O3
0.2
CO
4
SO2
2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Jul
40
Excellent
Thu
24 Jul
41
Excellent
Fri
25 Jul
41
Excellent
Sat
26 Jul
64
Good
Sun
27 Jul
49
Excellent
Mon
28 Jul
43
Excellent
Tue
29 Jul
44
Excellent
Air quality in the last 12 months (Hecheng)
|
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
|
|
2025/02
|
29
|
18
|
46
|
61
|
72
|
68
|
57
|
82
|
56
|
51
|
41
|
49
|
67
|
48
|
39
|
55
|
36
|
41
|
37
|
33
|
85
|
27
|
44
|
84
|
41
|
37
|
29
|
37
|
|||
|
2025/01
|
107
|
95
|
131
|
187
|
162
|
102
|
83
|
54
|
49
|
70
|
80
|
85
|
87
|
90
|
85
|
71
|
79
|
128
|
114
|
96
|
112
|
147
|
180
|
138
|
18
|
25
|
59
|
102
|
241
|
125
|
46
|
|
2024/12
|
60
|
59
|
87
|
84
|
23
|
36
|
37
|
54
|
61
|
23
|
39
|
64
|
69
|
54
|
60
|
63
|
76
|
72
|
75
|
75
|
87
|
73
|
57
|
76
|
85
|
82
|
84
|
125
|
127
|
106
|
89
|
|
2024/11
|
54
|
68
|
62
|
61
|
66
|
63
|
58
|
62
|
78
|
65
|
61
|
60
|
62
|
68
|
68
|
54
|
13
|
11
|
14
|
22
|
37
|
39
|
48
|
36
|
12
|
23
|
36
|
44
|
47
|
54
|
|
|
2024/10
|
17
|
47
|
64
|
55
|
61
|
62
|
43
|
44
|
46
|
57
|
62
|
74
|
63
|
32
|
42
|
34
|
39
|
30
|
18
|
14
|
20
|
15
|
35
|
59
|
53
|
49
|
54
|
54
|
62
|
59
|
59
|
|
2024/09
|
44
|
38
|
54
|
38
|
74
|
59
|
54
|
41
|
36
|
37
|
38
|
43
|
26
|
33
|
41
|
34
|
36
|
43
|
37
|
36
|
40
|
31
|
42
|
49
|
50
|
60
|
63
|
52
|
56
|
65
|
|
|
2024/08
|
12
|
16
|
15
|
22
|
24
|
23
|
27
|
25
|
26
|
26
|
18
|
47
|
43
|
49
|
49
|
42
|
45
|
44
|
28
|
36
|
35
|
21
|
18
|
16
|
21
|
22
|
26
|
29
|
41
|
42
|
52
|
|
2024/07
|
17
|
14
|
18
|
16
|
16
|
13
|
15
|
15
|
16
|
19
|
22
|
21
|
21
|
17
|
22
|
18
|
18
|
17
|
10
|
15
|
24
|
23
|
24
|
28
|
29
|
32
|
33
|
19
|
12
|
16
|
19
|
|
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