Air Quality
Excellent
No health implications.
13
PM2.5
21
PM10
45
O3
0.3
CO
8
SO2
18
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
8 Sep
54
Good
Tue
9 Sep
46
Excellent
Wed
10 Sep
53
Good
Thu
11 Sep
55
Good
Fri
12 Sep
56
Good
Sat
13 Sep
55
Good
Sun
14 Sep
46
Excellent
Air quality in the last 12 months (Longtan)
|
2025/08
|
21
|
23
|
18
|
18
|
20
|
22
|
19
|
24
|
23
|
18
|
28
|
26
|
23
|
20
|
28
|
22
|
16
|
22
|
31
|
26
|
22
|
18
|
25
|
18
|
15
|
21
|
26
|
21
|
23
|
27
|
27
|
|
2025/07
|
16
|
17
|
17
|
19
|
23
|
16
|
23
|
31
|
35
|
35
|
34
|
35
|
27
|
24
|
21
|
12
|
16
|
16
|
18
|
18
|
17
|
22
|
15
|
15
|
21
|
32
|
16
|
22
|
19
|
12
|
17
|
|
2025/06
|
29
|
44
|
16
|
28
|
26
|
31
|
30
|
26
|
39
|
22
|
16
|
22
|
34
|
34
|
36
|
22
|
37
|
27
|
40
|
39
|
15
|
22
|
30
|
40
|
41
|
41
|
51
|
27
|
35
|
32
|
|
|
2025/05
|
31
|
21
|
25
|
21
|
36
|
27
|
39
|
45
|
62
|
36
|
54
|
57
|
49
|
48
|
40
|
33
|
23
|
31
|
23
|
28
|
47
|
40
|
30
|
36
|
35
|
38
|
44
|
34
|
44
|
40
|
52
|
|
2025/04
|
63
|
59
|
61
|
50
|
36
|
61
|
45
|
70
|
68
|
96
|
79
|
40
|
15
|
24
|
33
|
35
|
54
|
49
|
33
|
64
|
138
|
27
|
30
|
74
|
31
|
54
|
53
|
55
|
60
|
58
|
|
|
2025/03
|
54
|
32
|
57
|
34
|
51
|
73
|
57
|
69
|
95
|
77
|
64
|
102
|
58
|
44
|
43
|
59
|
90
|
79
|
70
|
82
|
66
|
80
|
56
|
99
|
96
|
65
|
43
|
30
|
37
|
43
|
70
|
|
2025/02
|
111
|
145
|
74
|
46
|
59
|
66
|
45
|
31
|
41
|
69
|
67
|
62
|
64
|
54
|
67
|
42
|
32
|
35
|
42
|
43
|
43
|
46
|
46
|
32
|
80
|
66
|
75
|
107
|
|||
|
2025/01
|
35
|
31
|
34
|
62
|
94
|
98
|
70
|
73
|
64
|
64
|
107
|
118
|
66
|
62
|
39
|
50
|
40
|
52
|
77
|
167
|
108
|
129
|
99
|
128
|
169
|
90
|
45
|
71
|
76
|
39
|
69
|
|
2024/12
|
47
|
22
|
21
|
28
|
28
|
48
|
41
|
44
|
55
|
51
|
47
|
49
|
99
|
40
|
26
|
37
|
50
|
50
|
54
|
85
|
92
|
40
|
53
|
32
|
51
|
36
|
33
|
33
|
47
|
54
|
43
|
|
2024/11
|
84
|
83
|
63
|
40
|
26
|
44
|
52
|
63
|
55
|
47
|
108
|
52
|
45
|
32
|
36
|
29
|
56
|
57
|
36
|
54
|
53
|
55
|
79
|
49
|
49
|
67
|
29
|
55
|
33
|
43
|
|
|
2024/10
|
21
|
20
|
27
|
28
|
39
|
47
|
46
|
38
|
37
|
25
|
26
|
54
|
42
|
33
|
24
|
30
|
51
|
55
|
30
|
30
|
20
|
49
|
53
|
58
|
70
|
181
|
65
|
42
|
50
|
96
|
61
|
|
2024/09
|
18
|
21
|
24
|
31
|
18
|
17
|
23
|
29
|
30
|
18
|
23
|
24
|
26
|
25
|
32
|
24
|
34
|
33
|
26
|
24
|
25
|
38
|
30
|
28
|
29
|
31
|
37
|
38
|
31
|
20
|
|
|
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