Air Quality
Excellent
No health implications.
17
PM2.5
28
PM10
73
O3
0.9
CO
6
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
63
Good
Tue
29 Apr
84
Good
Wed
30 Apr
67
Good
Thu
1 May
69
Good
Fri
2 May
68
Good
Sat
3 May
70
Good
Sun
4 May
31
Excellent
Air quality in the last 12 months (Longhua)
|
2025/02
|
26
|
20
|
11
|
17
|
35
|
43
|
23
|
48
|
44
|
44
|
29
|
38
|
74
|
42
|
32
|
56
|
48
|
63
|
40
|
41
|
44
|
47
|
22
|
31
|
56
|
55
|
43
|
39
|
|||
|
2025/01
|
68
|
66
|
60
|
64
|
69
|
75
|
69
|
76
|
67
|
53
|
51
|
43
|
64
|
60
|
64
|
67
|
60
|
66
|
67
|
72
|
53
|
54
|
47
|
21
|
22
|
19
|
19
|
42
|
83
|
38
|
28
|
|
2024/12
|
68
|
69
|
60
|
54
|
61
|
67
|
57
|
35
|
44
|
50
|
57
|
36
|
39
|
58
|
47
|
52
|
74
|
60
|
55
|
66
|
65
|
58
|
64
|
64
|
67
|
54
|
64
|
63
|
76
|
77
|
82
|
|
2024/11
|
27
|
31
|
56
|
57
|
51
|
58
|
44
|
50
|
51
|
57
|
59
|
56
|
52
|
19
|
26
|
30
|
33
|
36
|
21
|
11
|
19
|
30
|
41
|
55
|
41
|
19
|
40
|
40
|
48
|
59
|
|
|
2024/10
|
31
|
24
|
37
|
39
|
45
|
43
|
43
|
49
|
47
|
42
|
42
|
52
|
45
|
34
|
35
|
33
|
31
|
33
|
54
|
34
|
42
|
34
|
26
|
41
|
49
|
46
|
47
|
27
|
31
|
43
|
41
|
|
2024/09
|
26
|
33
|
46
|
30
|
22
|
8
|
17
|
15
|
19
|
33
|
43
|
44
|
43
|
36
|
31
|
21
|
29
|
21
|
33
|
37
|
18
|
23
|
17
|
21
|
26
|
44
|
42
|
39
|
35
|
40
|
|
|
2024/08
|
31
|
28
|
27
|
36
|
45
|
46
|
49
|
36
|
24
|
24
|
28
|
21
|
29
|
25
|
32
|
18
|
19
|
19
|
20
|
20
|
18
|
31
|
38
|
33
|
26
|
45
|
34
|
45
|
39
|
31
|
13
|
|
2024/07
|
25
|
23
|
15
|
18
|
25
|
14
|
14
|
20
|
17
|
12
|
13
|
16
|
15
|
18
|
16
|
14
|
13
|
18
|
20
|
20
|
15
|
16
|
21
|
29
|
42
|
25
|
18
|
11
|
13
|
12
|
17
|
|
2024/06
|
11
|
33
|
22
|
22
|
28
|
32
|
19
|
13
|
16
|
15
|
23
|
25
|
26
|
27
|
19
|
30
|
21
|
22
|
20
|
20
|
21
|
27
|
12
|
16
|
19
|
23
|
19
|
15
|
15
|
22
|
|
|
2024/05
|
27
|
28
|
29
|
20
|
30
|
39
|
43
|
42
|
34
|
38
|
36
|
43
|
36
|
31
|
46
|
48
|
52
|
47
|
37
|
20
|
20
|
30
|
22
|
20
|
25
|
23
|
22
|
24
|
22
|
31
|
18
|
|
2024/04
|
45
|
49
|
19
|
27
|
41
|
26
|
30
|
35
|
22
|
33
|
48
|
52
|
47
|
30
|
35
|
32
|
28
|
29
|
27
|
25
|
20
|
41
|
33
|
49
|
15
|
26
|
33
|
15
|
26
|
33
|
|
|
2024/03
|
20
|
31
|
43
|
35
|
33
|
41
|
43
|
39
|
60
|
23
|
30
|
21
|
66
|
63
|
72
|
54
|
45
|
50
|
28
|
60
|
53
|
52
|
46
|
36
|
34
|
63
|
34
|
44
|
59
|
33
|
27
|
|
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