Air Quality
Excellent
No health implications.
28
PM2.5
42
PM10
54
O3
0.6
CO
8
SO2
12
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
16 Feb
76
Good
Tue
17 Feb
94
Good
Wed
18 Feb
74
Good
Thu
19 Feb
70
Good
Fri
20 Feb
54
Good
Sat
21 Feb
51
Good
Sun
22 Feb
36
Excellent
Air quality in the last 12 months (Quannan)
|
2026/01
|
33
|
19
|
38
|
51
|
43
|
33
|
41
|
52
|
56
|
57
|
61
|
64
|
63
|
67
|
76
|
80
|
73
|
85
|
78
|
40
|
35
|
41
|
38
|
48
|
51
|
66
|
52
|
39
|
49
|
54
|
31
|
|
2025/12
|
52
|
62
|
56
|
53
|
56
|
54
|
56
|
56
|
60
|
58
|
57
|
62
|
34
|
36
|
56
|
53
|
55
|
65
|
67
|
52
|
74
|
48
|
50
|
51
|
22
|
33
|
40
|
47
|
49
|
50
|
57
|
|
2025/11
|
31
|
48
|
38
|
15
|
17
|
29
|
42
|
45
|
46
|
23
|
31
|
16
|
17
|
33
|
47
|
53
|
53
|
42
|
24
|
40
|
42
|
56
|
55
|
57
|
44
|
71
|
62
|
74
|
80
|
61
|
|
|
2025/10
|
47
|
30
|
39
|
40
|
32
|
26
|
38
|
40
|
41
|
41
|
41
|
44
|
34
|
34
|
32
|
36
|
42
|
38
|
28
|
17
|
14
|
14
|
25
|
30
|
35
|
47
|
51
|
48
|
30
|
45
|
40
|
|
2025/09
|
38
|
29
|
32
|
36
|
36
|
31
|
18
|
13
|
15
|
22
|
24
|
31
|
32
|
37
|
37
|
31
|
29
|
22
|
22
|
13
|
22
|
21
|
21
|
15
|
21
|
25
|
34
|
36
|
40
|
50
|
|
|
2025/08
|
28
|
28
|
22
|
17
|
16
|
22
|
33
|
36
|
28
|
25
|
21
|
31
|
28
|
12
|
20
|
28
|
33
|
23
|
23
|
19
|
28
|
20
|
27
|
24
|
26
|
18
|
23
|
28
|
27
|
29
|
37
|
|
2025/07
|
28
|
26
|
35
|
39
|
21
|
26
|
35
|
38
|
37
|
16
|
12
|
24
|
36
|
28
|
31
|
36
|
40
|
30
|
20
|
18
|
13
|
13
|
20
|
22
|
24
|
24
|
24
|
21
|
23
|
21
|
19
|
|
2025/06
|
36
|
24
|
14
|
28
|
38
|
39
|
35
|
41
|
27
|
33
|
34
|
27
|
24
|
19
|
17
|
25
|
19
|
26
|
24
|
15
|
20
|
21
|
25
|
25
|
24
|
18
|
21
|
21
|
23
|
25
|
|
|
2025/05
|
64
|
53
|
48
|
49
|
33
|
35
|
38
|
61
|
36
|
32
|
32
|
45
|
47
|
45
|
35
|
23
|
19
|
26
|
27
|
28
|
28
|
34
|
33
|
26
|
49
|
52
|
45
|
43
|
11
|
25
|
44
|
|
2025/04
|
24
|
45
|
53
|
64
|
52
|
56
|
61
|
70
|
95
|
64
|
52
|
60
|
150
|
102
|
92
|
81
|
68
|
63
|
46
|
42
|
46
|
38
|
32
|
35
|
25
|
23
|
40
|
45
|
49
|
62
|
|
|
2025/03
|
62
|
41
|
35
|
24
|
14
|
15
|
26
|
35
|
43
|
49
|
58
|
53
|
38
|
40
|
36
|
12
|
49
|
49
|
48
|
56
|
54
|
56
|
67
|
77
|
85
|
61
|
47
|
63
|
25
|
11
|
12
|
|
2025/02
|
51
|
25
|
17
|
32
|
56
|
61
|
20
|
48
|
43
|
39
|
49
|
53
|
50
|
51
|
56
|
68
|
47
|
57
|
39
|
42
|
24
|
22
|
22
|
35
|
52
|
71
|
81
|
66
|
|||
|
1
|
2
|
3
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4
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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