Air Quality
Excellent
No health implications.
19
PM2.5
29
PM10
24
O3
0.5
CO
5
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
4 May
55
Good
Mon
5 May
52
Good
Tue
6 May
61
Good
Wed
7 May
55
Good
Thu
8 May
57
Good
Fri
9 May
54
Good
Sat
10 May
29
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