Air Quality
Excellent
No health implications.
PM2.5
PM10
O3
CO
SO2
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Feb
Mon
24 Feb
Tue
25 Feb
Wed
26 Feb
Thu
27 Feb
Fri
28 Feb
Sat
1 Mar
Real-time AQI (Monitoring Station in Ya'an)
建安厂
4531
PM2.5
33
PM10
57
O3
0.5
CO
5
SO2
13
NO2
市政府
4028
PM2.5
33
PM10
56
O3
0.5
CO
6
SO2
14
NO2
川农大
3524
PM2.5
28
PM10
48
O3
0.6
CO
4
SO2
13
NO2
Air quality in the last 12 months (Ya'an)
|
2025/01
|
83
|
80
|
83
|
146
|
78
|
104
|
71
|
46
|
41
|
62
|
30
|
68
|
68
|
64
|
68
|
63
|
77
|
37
|
49
|
79
|
112
|
125
|
158
|
70
|
30
|
41
|
72
|
43
|
100
|
99
|
53
|
|
2024/12
|
69
|
67
|
88
|
79
|
42
|
72
|
56
|
28
|
22
|
33
|
40
|
57
|
43
|
33
|
38
|
56
|
93
|
81
|
164
|
133
|
85
|
37
|
36
|
35
|
48
|
42
|
87
|
62
|
81
|
36
|
38
|
|
2024/11
|
14
|
29
|
33
|
16
|
22
|
52
|
55
|
74
|
66
|
13
|
25
|
25
|
25
|
30
|
44
|
21
|
19
|
20
|
17
|
25
|
34
|
63
|
52
|
32
|
13
|
38
|
32
|
31
|
38
|
61
|
|
|
2024/10
|
18
|
28
|
26
|
27
|
27
|
30
|
35
|
47
|
46
|
17
|
24
|
23
|
41
|
46
|
50
|
44
|
21
|
40
|
19
|
23
|
22
|
18
|
32
|
55
|
40
|
19
|
17
|
26
|
49
|
40
|
35
|
|
2024/09
|
21
|
20
|
22
|
25
|
15
|
23
|
20
|
34
|
22
|
14
|
28
|
33
|
29
|
30
|
27
|
15
|
29
|
34
|
37
|
39
|
22
|
27
|
32
|
35
|
31
|
39
|
54
|
68
|
54
|
11
|
|
|
2024/08
|
38
|
42
|
30
|
16
|
25
|
27
|
41
|
35
|
25
|
22
|
50
|
37
|
37
|
46
|
41
|
21
|
33
|
30
|
35
|
46
|
51
|
55
|
58
|
47
|
44
|
40
|
39
|
45
|
51
|
43
|
41
|
|
2024/07
|
15
|
21
|
24
|
34
|
22
|
22
|
36
|
14
|
8
|
13
|
19
|
26
|
26
|
13
|
25
|
18
|
20
|
17
|
37
|
18
|
19
|
24
|
23
|
13
|
18
|
36
|
39
|
23
|
18
|
16
|
26
|
|
2024/06
|
50
|
19
|
26
|
24
|
35
|
38
|
19
|
25
|
17
|
28
|
25
|
42
|
34
|
35
|
37
|
45
|
13
|
26
|
21
|
37
|
21
|
14
|
28
|
23
|
30
|
32
|
21
|
25
|
25
|
33
|
|
|
2024/05
|
27
|
22
|
21
|
15
|
32
|
36
|
39
|
28
|
28
|
55
|
29
|
36
|
38
|
49
|
52
|
54
|
38
|
38
|
32
|
34
|
32
|
40
|
50
|
49
|
54
|
36
|
35
|
31
|
12
|
19
|
41
|
|
2024/04
|
57
|
53
|
48
|
39
|
34
|
19
|
19
|
15
|
29
|
28
|
24
|
42
|
53
|
56
|
63
|
51
|
29
|
19
|
23
|
40
|
55
|
60
|
23
|
25
|
40
|
52
|
64
|
74
|
45
|
12
|
|
|
2024/03
|
34
|
26
|
58
|
115
|
51
|
46
|
56
|
64
|
104
|
101
|
29
|
54
|
43
|
22
|
55
|
52
|
82
|
55
|
55
|
63
|
64
|
70
|
68
|
57
|
19
|
31
|
37
|
18
|
32
|
43
|
45
|
|
2024/02
|
71
|
61
|
28
|
38
|
49
|
48
|
54
|
57
|
49
|
103
|
94
|
90
|
81
|
99
|
35
|
35
|
50
|
70
|
91
|
185
|
67
|
53
|
41
|
51
|
77
|
103
|
105
|
79
|
42
|
||
|
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
*: primary pollution