Air Quality
Excellent
No health implications.
4
PM2.5
18
PM10
75
O3
0.6
CO
5
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 May
59
Good
Sun
17 May
56
Good
Mon
18 May
66
Good
Tue
19 May
63
Good
Wed
20 May
61
Good
Thu
21 May
57
Good
Fri
22 May
33
Excellent
Air quality in the last 12 months (Heshan)
|
2026/04
|
46
|
37
|
27
|
36
|
57
|
51
|
86
|
65
|
64
|
41
|
57
|
43
|
47
|
33
|
35
|
34
|
44
|
50
|
44
|
69
|
29
|
24
|
33
|
43
|
41
|
43
|
53
|
32
|
31
|
37
|
|
|
2026/03
|
20
|
35
|
52
|
49
|
68
|
90
|
91
|
80
|
83
|
65
|
46
|
81
|
69
|
58
|
80
|
18
|
19
|
34
|
55
|
73
|
78
|
36
|
38
|
70
|
79
|
39
|
47
|
54
|
49
|
33
|
48
|
|
2026/02
|
51
|
68
|
85
|
128
|
123
|
159
|
81
|
79
|
72
|
70
|
64
|
75
|
70
|
59
|
59
|
37
|
82
|
71
|
64
|
52
|
43
|
59
|
49
|
46
|
48
|
32
|
30
|
47
|
|||
|
2026/01
|
65
|
66
|
80
|
71
|
79
|
84
|
73
|
62
|
63
|
80
|
89
|
82
|
87
|
67
|
94
|
137
|
183
|
194
|
28
|
65
|
48
|
58
|
82
|
71
|
71
|
146
|
156
|
120
|
83
|
64
|
63
|
|
2025/12
|
111
|
119
|
66
|
68
|
65
|
84
|
118
|
130
|
132
|
160
|
167
|
184
|
33
|
53
|
63
|
65
|
112
|
118
|
83
|
112
|
61
|
89
|
53
|
67
|
62
|
74
|
88
|
88
|
107
|
169
|
138
|
|
2025/11
|
57
|
35
|
26
|
36
|
52
|
38
|
58
|
26
|
29
|
24
|
51
|
50
|
51
|
67
|
81
|
74
|
59
|
29
|
35
|
46
|
49
|
64
|
71
|
52
|
53
|
51
|
66
|
62
|
58
|
64
|
|
|
2025/10
|
58
|
41
|
36
|
40
|
54
|
57
|
73
|
91
|
71
|
37
|
162
|
103
|
41
|
48
|
42
|
44
|
27
|
15
|
16
|
16
|
25
|
34
|
40
|
48
|
92
|
88
|
78
|
69
|
92
|
91
|
59
|
|
2025/09
|
41
|
40
|
34
|
35
|
27
|
33
|
36
|
48
|
35
|
31
|
26
|
24
|
37
|
51
|
37
|
29
|
35
|
26
|
17
|
21
|
36
|
34
|
25
|
16
|
17
|
25
|
29
|
40
|
42
|
50
|
|
|
2025/08
|
37
|
39
|
39
|
23
|
22
|
25
|
15
|
17
|
20
|
27
|
30
|
38
|
15
|
28
|
16
|
19
|
21
|
26
|
15
|
13
|
14
|
18
|
18
|
19
|
23
|
18
|
20
|
20
|
20
|
44
|
18
|
|
2025/07
|
14
|
14
|
15
|
16
|
28
|
40
|
39
|
41
|
42
|
21
|
33
|
28
|
23
|
25
|
26
|
22
|
30
|
41
|
38
|
36
|
24
|
16
|
14
|
18
|
26
|
35
|
29
|
23
|
25
|
25
|
23
|
|
2025/06
|
13
|
41
|
40
|
45
|
43
|
45
|
30
|
34
|
31
|
35
|
34
|
33
|
23
|
25
|
24
|
25
|
19
|
15
|
21
|
20
|
20
|
18
|
15
|
19
|
22
|
29
|
28
|
16
|
18
|
16
|
|
|
2025/05
|
36
|
46
|
56
|
55
|
50
|
56
|
78
|
38
|
33
|
44
|
27
|
36
|
41
|
76
|
50
|
33
|
36
|
64
|
47
|
18
|
25
|
37
|
42
|
57
|
56
|
45
|
59
|
24
|
23
|
24
|
24
|
|
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