Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
43
O3
0.5
CO
6
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Mar
52
Good
Mon
17 Mar
69
Good
Tue
18 Mar
79
Good
Wed
19 Mar
79
Good
Thu
20 Mar
82
Good
Fri
21 Mar
48
Excellent
Sat
22 Mar
26
Excellent
Air quality in the last 12 months (Heshan)
|
2025/02
|
34
|
34
|
9
|
26
|
47
|
50
|
25
|
53
|
39
|
53
|
60
|
48
|
48
|
56
|
33
|
63
|
47
|
58
|
48
|
40
|
40
|
44
|
28
|
36
|
50
|
60
|
63
|
33
|
|||
|
2025/01
|
83
|
87
|
65
|
73
|
88
|
101
|
104
|
87
|
77
|
49
|
39
|
48
|
64
|
78
|
58
|
58
|
55
|
63
|
60
|
64
|
64
|
56
|
60
|
39
|
27
|
17
|
28
|
45
|
88
|
49
|
31
|
|
2024/12
|
78
|
85
|
83
|
70
|
62
|
73
|
53
|
36
|
57
|
74
|
59
|
34
|
39
|
54
|
52
|
47
|
63
|
45
|
54
|
66
|
64
|
58
|
69
|
69
|
61
|
66
|
81
|
69
|
80
|
100
|
76
|
|
2024/11
|
43
|
37
|
53
|
52
|
38
|
55
|
46
|
47
|
53
|
55
|
59
|
51
|
48
|
32
|
24
|
24
|
27
|
28
|
19
|
17
|
29
|
32
|
38
|
40
|
38
|
23
|
31
|
41
|
40
|
54
|
|
|
2024/10
|
34
|
25
|
41
|
37
|
42
|
45
|
51
|
72
|
59
|
38
|
47
|
62
|
51
|
36
|
39
|
41
|
30
|
39
|
53
|
39
|
38
|
37
|
28
|
36
|
40
|
41
|
34
|
23
|
25
|
39
|
46
|
|
2024/09
|
26
|
27
|
33
|
36
|
28
|
10
|
18
|
18
|
17
|
32
|
39
|
45
|
48
|
38
|
25
|
31
|
34
|
18
|
38
|
32
|
18
|
20
|
21
|
26
|
40
|
37
|
35
|
46
|
28
|
32
|
|
|
2024/08
|
19
|
23
|
20
|
23
|
35
|
38
|
40
|
25
|
20
|
20
|
18
|
23
|
32
|
24
|
25
|
17
|
12
|
18
|
22
|
23
|
18
|
22
|
25
|
27
|
23
|
33
|
28
|
40
|
32
|
32
|
27
|
|
2024/07
|
20
|
20
|
15
|
15
|
19
|
16
|
12
|
14
|
14
|
13
|
9
|
11
|
11
|
15
|
15
|
14
|
11
|
14
|
22
|
19
|
15
|
13
|
14
|
21
|
26
|
30
|
17
|
11
|
11
|
12
|
14
|
|
2024/06
|
9
|
23
|
20
|
20
|
39
|
27
|
35
|
24
|
16
|
14
|
15
|
21
|
21
|
21
|
19
|
22
|
23
|
20
|
19
|
17
|
13
|
20
|
12
|
12
|
15
|
17
|
23
|
12
|
13
|
16
|
|
|
2024/05
|
20
|
32
|
48
|
22
|
34
|
40
|
34
|
34
|
41
|
43
|
35
|
31
|
38
|
43
|
44
|
42
|
52
|
55
|
44
|
24
|
17
|
32
|
36
|
19
|
29
|
17
|
19
|
25
|
29
|
39
|
20
|
|
2024/04
|
39
|
41
|
24
|
23
|
25
|
27
|
31
|
34
|
32
|
37
|
47
|
41
|
35
|
31
|
34
|
29
|
24
|
26
|
29
|
21
|
19
|
28
|
30
|
47
|
19
|
30
|
42
|
36
|
26
|
30
|
|
|
2024/03
|
24
|
30
|
61
|
47
|
31
|
38
|
34
|
46
|
53
|
26
|
27
|
35
|
55
|
74
|
72
|
82
|
52
|
42
|
27
|
66
|
55
|
51
|
37
|
34
|
33
|
46
|
43
|
40
|
50
|
32
|
34
|
|
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