Air Quality
Excellent
No health implications.
7
PM2.5
8
PM10
23
O3
0.9
CO
4
SO2
9
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 Nov
62
Good
Mon
18 Nov
67
Good
Tue
19 Nov
61
Good
Wed
20 Nov
77
Good
Thu
21 Nov
50
Excellent
Fri
22 Nov
50
Excellent
Air quality in the last 12 months (Hecheng)
|
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
|
|
2024/06
|
38
|
28
|
29
|
13
|
16
|
28
|
30
|
13
|
13
|
16
|
17
|
21
|
22
|
23
|
32
|
35
|
18
|
11
|
19
|
26
|
23
|
19
|
16
|
16
|
16
|
19
|
11
|
19
|
13
|
14
|
|
|
2024/05
|
18
|
27
|
12
|
13
|
22
|
37
|
49
|
55
|
44
|
36
|
23
|
53
|
55
|
61
|
64
|
75
|
53
|
29
|
14
|
13
|
33
|
45
|
44
|
38
|
41
|
25
|
21
|
45
|
24
|
10
|
30
|
|
2024/04
|
29
|
35
|
20
|
35
|
30
|
32
|
37
|
42
|
37
|
38
|
37
|
36
|
38
|
32
|
51
|
36
|
23
|
39
|
24
|
30
|
49
|
51
|
39
|
48
|
28
|
40
|
33
|
34
|
26
|
13
|
|
|
2024/03
|
83
|
51
|
50
|
24
|
22
|
79
|
83
|
64
|
57
|
55
|
49
|
54
|
44
|
52
|
38
|
33
|
25
|
21
|
46
|
78
|
70
|
48
|
33
|
45
|
19
|
26
|
36
|
25
|
41
|
45
|
33
|
|
2024/02
|
25
|
19
|
19
|
40
|
55
|
58
|
68
|
81
|
97
|
148
|
113
|
119
|
80
|
40
|
49
|
55
|
50
|
36
|
95
|
49
|
15
|
23
|
27
|
32
|
31
|
38
|
56
|
49
|
58
|
||
|
2024/01
|
101
|
72
|
71
|
89
|
87
|
91
|
100
|
162
|
133
|
112
|
90
|
60
|
75
|
90
|
100
|
122
|
59
|
21
|
14
|
34
|
64
|
44
|
70
|
65
|
82
|
84
|
60
|
80
|
85
|
55
|
36
|
|
2023/12
|
33
|
39
|
58
|
51
|
50
|
49
|
45
|
57
|
51
|
46
|
13
|
30
|
38
|
31
|
16
|
26
|
27
|
23
|
31
|
54
|
66
|
61
|
69
|
78
|
74
|
67
|
71
|
111
|
158
|
190
|
124
|
|
2023/11
|
43
|
42
|
43
|
27
|
25
|
23
|
40
|
28
|
19
|
17
|
11
|
18
|
28
|
39
|
29
|
29
|
36
|
43
|
47
|
60
|
62
|
75
|
86
|
59
|
52
|
63
|
66
|
77
|
79
|
54
|
|
|
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