Air Quality
Excellent
No health implications.
3
PM2.5
6
PM10
44
O3
0.8
CO
7
SO2
15
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
15 Mar
57
Good
Sun
16 Mar
65
Good
Mon
17 Mar
59
Good
Tue
18 Mar
56
Good
Wed
19 Mar
58
Good
Thu
20 Mar
24
Excellent
Fri
21 Mar
49
Excellent
Air quality in the last 12 months (Hengnan)
|
2025/01
|
149
|
125
|
157
|
178
|
162
|
107
|
91
|
87
|
60
|
62
|
67
|
85
|
83
|
76
|
93
|
69
|
85
|
83
|
113
|
97
|
109
|
108
|
154
|
240
|
40
|
31
|
58
|
69
|
204
|
131
|
61
|
|
2024/12
|
67
|
72
|
78
|
126
|
45
|
47
|
49
|
64
|
95
|
71
|
50
|
73
|
91
|
64
|
59
|
75
|
83
|
80
|
99
|
121
|
119
|
107
|
89
|
104
|
136
|
125
|
132
|
122
|
95
|
125
|
121
|
|
2024/11
|
60
|
92
|
77
|
75
|
85
|
61
|
57
|
49
|
59
|
71
|
53
|
61
|
59
|
68
|
60
|
65
|
22
|
13
|
16
|
33
|
50
|
49
|
59
|
64
|
35
|
26
|
36
|
45
|
51
|
60
|
|
|
2024/10
|
32
|
48
|
55
|
52
|
51
|
68
|
67
|
50
|
52
|
62
|
69
|
73
|
135
|
69
|
37
|
34
|
49
|
42
|
27
|
28
|
38
|
23
|
34
|
46
|
50
|
62
|
50
|
59
|
65
|
50
|
54
|
|
2024/09
|
55
|
55
|
58
|
49
|
52
|
48
|
36
|
34
|
42
|
39
|
44
|
43
|
37
|
44
|
46
|
45
|
52
|
51
|
48
|
45
|
38
|
31
|
39
|
44
|
60
|
58
|
55
|
57
|
53
|
51
|
|
|
2024/08
|
17
|
21
|
26
|
30
|
35
|
34
|
32
|
33
|
35
|
36
|
31
|
32
|
27
|
36
|
37
|
37
|
48
|
66
|
34
|
47
|
50
|
24
|
26
|
27
|
41
|
41
|
46
|
28
|
36
|
41
|
59
|
|
2024/07
|
25
|
19
|
24
|
18
|
19
|
21
|
24
|
21
|
23
|
25
|
23
|
26
|
24
|
22
|
28
|
21
|
16
|
17
|
19
|
21
|
24
|
29
|
27
|
35
|
44
|
33
|
23
|
15
|
17
|
15
|
17
|
|
2024/06
|
20
|
24
|
38
|
18
|
21
|
31
|
38
|
37
|
39
|
27
|
23
|
20
|
17
|
21
|
18
|
23
|
13
|
16
|
19
|
24
|
24
|
23
|
25
|
23
|
9
|
19
|
28
|
25
|
21
|
23
|
|
|
2024/05
|
23
|
35
|
32
|
16
|
37
|
65
|
101
|
89
|
72
|
81
|
31
|
70
|
85
|
72
|
66
|
66
|
60
|
49
|
27
|
20
|
40
|
41
|
42
|
37
|
33
|
27
|
18
|
35
|
27
|
18
|
20
|
|
2024/04
|
39
|
51
|
27
|
27
|
24
|
32
|
40
|
46
|
49
|
39
|
50
|
48
|
44
|
58
|
56
|
47
|
24
|
40
|
27
|
27
|
39
|
56
|
41
|
48
|
31
|
31
|
40
|
55
|
48
|
13
|
|
|
2024/03
|
87
|
67
|
53
|
45
|
40
|
108
|
80
|
69
|
55
|
62
|
49
|
51
|
48
|
40
|
44
|
36
|
44
|
19
|
50
|
63
|
75
|
44
|
27
|
31
|
30
|
27
|
42
|
29
|
39
|
44
|
34
|
|
2024/02
|
36
|
18
|
20
|
32
|
70
|
29
|
51
|
101
|
105
|
160
|
91
|
111
|
39
|
39
|
52
|
44
|
40
|
28
|
45
|
57
|
15
|
25
|
33
|
37
|
66
|
48
|
76
|
41
|
56
|
||
|
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