Air Quality
Excellent
No health implications.
13
PM2.5
46
PM10
75
O3
0.7
CO
8
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 May
85
Good
Mon
29 May
82
Good
Tue
30 May
80
Good
Wed
31 May
66
Good
Thu
1 Jun
67
Good
Fri
2 Jun
55
Good
Sat
3 Jun
52
Good
Air quality in the last 12 months (Quannan)
|
2023/04
|
38
|
49
|
45
|
45
|
31
|
29
|
26
|
60
|
55
|
57
|
51
|
63
|
57
|
58
|
42
|
53
|
53
|
34
|
33
|
31
|
31
|
43
|
75
|
49
|
53
|
25
|
40
|
64
|
49
|
60
|
|
|
2023/03
|
66
|
71
|
67
|
64
|
73
|
63
|
60
|
68
|
75
|
70
|
62
|
72
|
71
|
62
|
72
|
75
|
61
|
50
|
52
|
65
|
71
|
43
|
38
|
24
|
19
|
25
|
30
|
46
|
41
|
49
|
49
|
|
2023/02
|
75
|
83
|
58
|
60
|
37
|
53
|
56
|
33
|
50
|
65
|
37
|
57
|
48
|
25
|
41
|
47
|
54
|
70
|
81
|
87
|
55
|
46
|
51
|
64
|
54
|
71
|
52
|
58
|
|||
|
2023/01
|
45
|
49
|
46
|
36
|
45
|
48
|
55
|
62
|
40
|
25
|
31
|
30
|
36
|
31
|
17
|
23
|
36
|
37
|
42
|
51
|
51
|
122
|
68
|
32
|
51
|
43
|
50
|
54
|
54
|
71
|
50
|
|
2022/12
|
12
|
18
|
28
|
44
|
22
|
18
|
27
|
43
|
46
|
43
|
45
|
51
|
50
|
29
|
32
|
35
|
29
|
35
|
47
|
56
|
48
|
50
|
54
|
56
|
52
|
56
|
59
|
77
|
51
|
45
|
32
|
|
2022/11
|
24
|
24
|
31
|
22
|
26
|
31
|
38
|
44
|
51
|
47
|
42
|
46
|
45
|
50
|
52
|
28
|
40
|
47
|
42
|
41
|
45
|
52
|
17
|
16
|
18
|
27
|
40
|
47
|
55
|
17
|
|
|
2022/10
|
39
|
35
|
39
|
45
|
37
|
27
|
28
|
27
|
33
|
26
|
44
|
34
|
42
|
42
|
47
|
31
|
28
|
44
|
42
|
41
|
45
|
48
|
45
|
52
|
50
|
51
|
54
|
41
|
24
|
29
|
30
|
|
2022/09
|
27
|
38
|
31
|
28
|
37
|
50
|
38
|
35
|
66
|
60
|
55
|
56
|
58
|
43
|
37
|
53
|
61
|
64
|
71
|
55
|
58
|
52
|
52
|
55
|
66
|
53
|
39
|
41
|
44
|
37
|
|
|
2022/08
|
41
|
49
|
30
|
14
|
17
|
26
|
29
|
26
|
26
|
25
|
26
|
27
|
27
|
35
|
38
|
22
|
22
|
23
|
15
|
16
|
18
|
27
|
50
|
39
|
17
|
22
|
29
|
32
|
46
|
43
|
43
|
|
2022/07
|
22
|
15
|
14
|
14
|
13
|
15
|
21
|
24
|
20
|
25
|
29
|
29
|
36
|
47
|
38
|
33
|
28
|
28
|
21
|
22
|
32
|
39
|
42
|
47
|
62
|
50
|
48
|
66
|
63
|
42
|
45
|
|
2022/06
|
19
|
27
|
16
|
21
|
21
|
22
|
22
|
20
|
18
|
19
|
20
|
26
|
47
|
20
|
21
|
25
|
30
|
16
|
18
|
17
|
16
|
21
|
24
|
25
|
26
|
29
|
22
|
18
|
19
|
30
|
|
|
2022/05
|
46
|
33
|
52
|
48
|
64
|
65
|
64
|
65
|
45
|
42
|
28
|
20
|
22
|
18
|
23
|
25
|
39
|
58
|
58
|
57
|
51
|
45
|
40
|
32
|
27
|
24
|
24
|
27
|
22
|
23
|
22
|
|
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