Air Quality
Excellent
No health implications.
12
PM2.5
19
PM10
30
O3
0.5
CO
5
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
17 May
33
Excellent
Sun
18 May
30
Excellent
Mon
19 May
34
Excellent
Tue
20 May
31
Excellent
Wed
21 May
38
Excellent
Thu
22 May
41
Excellent
Fri
23 May
23
Excellent
Air quality in the last 12 months (Heshan)
|
2025/02
|
42
|
15
|
15
|
56
|
104
|
34
|
16
|
53
|
52
|
70
|
122
|
77
|
50
|
92
|
48
|
32
|
38
|
32
|
42
|
27
|
16
|
21
|
13
|
41
|
76
|
25
|
42
|
57
|
|||
|
2025/01
|
155
|
147
|
90
|
132
|
92
|
127
|
138
|
90
|
66
|
39
|
51
|
118
|
126
|
152
|
106
|
79
|
93
|
109
|
106
|
118
|
135
|
146
|
167
|
108
|
56
|
15
|
45
|
59
|
159
|
103
|
73
|
|
2024/12
|
95
|
112
|
101
|
96
|
84
|
37
|
18
|
32
|
63
|
109
|
27
|
35
|
42
|
57
|
48
|
56
|
109
|
74
|
68
|
93
|
121
|
99
|
101
|
99
|
109
|
98
|
82
|
73
|
105
|
145
|
114
|
|
2024/11
|
45
|
49
|
62
|
74
|
63
|
66
|
59
|
53
|
56
|
55
|
64
|
64
|
68
|
66
|
54
|
49
|
48
|
28
|
24
|
21
|
24
|
26
|
38
|
51
|
62
|
21
|
33
|
37
|
49
|
64
|
|
|
2024/10
|
29
|
26
|
38
|
53
|
55
|
52
|
54
|
47
|
39
|
44
|
51
|
56
|
66
|
51
|
17
|
31
|
30
|
24
|
21
|
19
|
34
|
37
|
22
|
33
|
35
|
36
|
32
|
23
|
40
|
49
|
52
|
|
2024/09
|
25
|
31
|
26
|
29
|
39
|
35
|
15
|
16
|
20
|
24
|
21
|
31
|
40
|
42
|
41
|
28
|
24
|
31
|
33
|
36
|
27
|
24
|
31
|
37
|
47
|
35
|
42
|
52
|
34
|
39
|
|
|
2024/08
|
17
|
19
|
23
|
24
|
26
|
30
|
31
|
27
|
24
|
27
|
23
|
19
|
18
|
18
|
23
|
30
|
22
|
20
|
27
|
26
|
19
|
22
|
22
|
27
|
24
|
30
|
30
|
38
|
30
|
28
|
32
|
|
2024/07
|
24
|
11
|
17
|
23
|
20
|
17
|
18
|
18
|
21
|
24
|
24
|
24
|
27
|
24
|
25
|
27
|
22
|
18
|
19
|
23
|
27
|
28
|
20
|
20
|
23
|
38
|
38
|
24
|
22
|
13
|
12
|
|
2024/06
|
27
|
32
|
23
|
19
|
16
|
25
|
32
|
25
|
18
|
16
|
21
|
22
|
26
|
17
|
26
|
27
|
27
|
13
|
28
|
26
|
27
|
21
|
21
|
15
|
12
|
12
|
17
|
15
|
16
|
20
|
|
|
2024/05
|
16
|
26
|
34
|
30
|
21
|
33
|
38
|
46
|
30
|
31
|
36
|
19
|
52
|
57
|
52
|
50
|
54
|
41
|
13
|
20
|
27
|
27
|
41
|
45
|
35
|
16
|
29
|
25
|
39
|
26
|
14
|
|
2024/04
|
59
|
58
|
64
|
32
|
22
|
19
|
19
|
24
|
46
|
37
|
35
|
50
|
46
|
49
|
54
|
47
|
42
|
31
|
46
|
30
|
14
|
44
|
29
|
42
|
54
|
37
|
43
|
50
|
61
|
46
|
|
|
2024/03
|
52
|
67
|
69
|
34
|
49
|
39
|
74
|
75
|
84
|
39
|
33
|
54
|
54
|
22
|
16
|
46
|
55
|
40
|
28
|
95
|
94
|
56
|
43
|
50
|
50
|
31
|
61
|
36
|
49
|
49
|
48
|
|
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