Air Quality
Excellent
No health implications.
21
PM2.5
40
PM10
59
O3
0.5
CO
5
SO2
19
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Sep
104
Light
Wed
17 Sep
94
Good
Thu
18 Sep
57
Good
Fri
19 Sep
56
Good
Sat
20 Sep
61
Good
Sun
21 Sep
26
Excellent
Mon
22 Sep
48
Excellent
Gulou Air quality rank
Air quality in the last 12 months (Gulou)
|
2025/08
|
11
|
10
|
17
|
23
|
36
|
30
|
24
|
23
|
30
|
14
|
11
|
21
|
47
|
28
|
26
|
30
|
35
|
34
|
32
|
34
|
37
|
27
|
25
|
27
|
25
|
20
|
39
|
33
|
32
|
25
|
16
|
|
2025/07
|
27
|
31
|
38
|
40
|
40
|
42
|
30
|
19
|
18
|
43
|
34
|
26
|
33
|
30
|
35
|
41
|
23
|
29
|
25
|
19
|
16
|
15
|
18
|
21
|
28
|
19
|
20
|
17
|
26
|
15
|
11
|
|
2025/06
|
12
|
11
|
41
|
60
|
47
|
43
|
19
|
21
|
27
|
35
|
43
|
31
|
29
|
38
|
23
|
44
|
47
|
35
|
11
|
16
|
9
|
21
|
35
|
22
|
26
|
41
|
19
|
14
|
12
|
20
|
|
|
2025/05
|
56
|
63
|
52
|
39
|
38
|
93
|
72
|
46
|
25
|
37
|
43
|
53
|
48
|
57
|
74
|
33
|
63
|
79
|
69
|
52
|
29
|
48
|
39
|
52
|
54
|
53
|
46
|
47
|
52
|
50
|
55
|
|
2025/04
|
46
|
61
|
33
|
61
|
79
|
66
|
66
|
66
|
83
|
79
|
77
|
225
|
105
|
84
|
50
|
59
|
69
|
69
|
80
|
54
|
58
|
62
|
63
|
74
|
67
|
56
|
46
|
58
|
58
|
60
|
|
|
2025/03
|
56
|
58
|
20
|
32
|
50
|
49
|
59
|
78
|
71
|
55
|
84
|
113
|
64
|
38
|
30
|
41
|
34
|
40
|
50
|
51
|
44
|
54
|
63
|
72
|
66
|
63
|
116
|
58
|
112
|
74
|
29
|
|
2025/02
|
35
|
60
|
81
|
73
|
50
|
40
|
61
|
32
|
39
|
52
|
54
|
100
|
65
|
69
|
96
|
92
|
68
|
50
|
61
|
51
|
44
|
63
|
74
|
66
|
84
|
107
|
91
|
67
|
|||
|
2025/01
|
76
|
82
|
88
|
78
|
96
|
81
|
47
|
61
|
36
|
46
|
60
|
64
|
76
|
96
|
68
|
58
|
65
|
77
|
101
|
104
|
121
|
132
|
71
|
50
|
28
|
64
|
52
|
43
|
65
|
54
|
70
|
|
2024/12
|
64
|
75
|
72
|
44
|
76
|
124
|
138
|
37
|
48
|
50
|
50
|
61
|
87
|
64
|
59
|
59
|
74
|
67
|
42
|
55
|
84
|
59
|
58
|
64
|
99
|
114
|
56
|
69
|
66
|
69
|
102
|
|
2024/11
|
25
|
54
|
55
|
62
|
46
|
41
|
28
|
25
|
43
|
37
|
53
|
52
|
63
|
58
|
83
|
45
|
31
|
32
|
29
|
31
|
51
|
75
|
33
|
34
|
31
|
39
|
67
|
62
|
44
|
58
|
|
|
2024/10
|
24
|
35
|
24
|
26
|
27
|
14
|
12
|
31
|
35
|
54
|
62
|
70
|
44
|
42
|
62
|
62
|
36
|
23
|
29
|
34
|
31
|
35
|
55
|
45
|
41
|
27
|
32
|
86
|
45
|
38
|
36
|
|
2024/09
|
42
|
41
|
27
|
31
|
31
|
41
|
41
|
44
|
23
|
30
|
12
|
18
|
30
|
32
|
25
|
18
|
16
|
21
|
23
|
13
|
25
|
28
|
28
|
34
|
40
|
42
|
35
|
31
|
41
|
41
|
|
|
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