Air Quality
Excellent
No health implications.
16
PM2.5
19
PM10
22
O3
0.6
CO
8
SO2
14
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
2 May
44
Excellent
Fri
3 May
51
Good
Sat
4 May
50
Excellent
Sun
5 May
80
Good
Mon
6 May
91
Good
Tue
7 May
80
Good
Wed
8 May
80
Good
Air quality in the last 12 months (Beichuan)
|
2024/02
|
75
|
46
|
29
|
40
|
38
|
53
|
54
|
80
|
121
|
203
|
128
|
94
|
92
|
85
|
48
|
46
|
58
|
61
|
238
|
336
|
47
|
60
|
33
|
63
|
78
|
66
|
64
|
49
|
44
|
||
|
2024/01
|
193
|
98
|
81
|
88
|
102
|
101
|
104
|
114
|
118
|
109
|
124
|
156
|
180
|
108
|
79
|
47
|
52
|
67
|
46
|
47
|
42
|
44
|
45
|
40
|
48
|
60
|
66
|
87
|
105
|
95
|
94
|
|
2023/12
|
43
|
50
|
76
|
100
|
69
|
89
|
94
|
100
|
114
|
131
|
92
|
65
|
62
|
56
|
62
|
58
|
61
|
66
|
91
|
91
|
85
|
101
|
102
|
81
|
96
|
118
|
151
|
155
|
131
|
163
|
152
|
|
2023/11
|
81
|
88
|
73
|
44
|
53
|
48
|
58
|
60
|
68
|
55
|
29
|
43
|
35
|
23
|
34
|
57
|
70
|
85
|
103
|
121
|
116
|
80
|
84
|
100
|
72
|
56
|
67
|
71
|
65
|
53
|
|
|
2023/10
|
44
|
42
|
47
|
39
|
25
|
18
|
41
|
43
|
39
|
40
|
28
|
21
|
32
|
43
|
55
|
56
|
43
|
28
|
24
|
51
|
58
|
76
|
76
|
88
|
97
|
77
|
38
|
47
|
61
|
71
|
58
|
|
2023/09
|
50
|
56
|
69
|
82
|
94
|
70
|
51
|
48
|
46
|
41
|
27
|
31
|
43
|
39
|
37
|
50
|
49
|
34
|
30
|
30
|
39
|
20
|
21
|
17
|
26
|
23
|
23
|
37
|
45
|
36
|
|
|
2023/08
|
36
|
33
|
27
|
30
|
29
|
30
|
35
|
29
|
33
|
38
|
29
|
37
|
52
|
50
|
47
|
47
|
44
|
55
|
50
|
36
|
56
|
66
|
44
|
51
|
46
|
20
|
39
|
44
|
43
|
42
|
58
|
|
2023/07
|
55
|
68
|
33
|
42
|
58
|
54
|
51
|
53
|
62
|
65
|
41
|
25
|
21
|
29
|
54
|
56
|
59
|
46
|
58
|
40
|
41
|
54
|
51
|
34
|
38
|
26
|
19
|
26
|
32
|
42
|
38
|
|
2023/06
|
26
|
20
|
20
|
26
|
35
|
41
|
45
|
49
|
74
|
84
|
72
|
60
|
54
|
56
|
39
|
27
|
28
|
34
|
53
|
52
|
44
|
39
|
54
|
50
|
53
|
70
|
56
|
45
|
45
|
63
|
|
|
2023/05
|
69
|
51
|
51
|
54
|
71
|
49
|
28
|
21
|
17
|
26
|
47
|
63
|
65
|
85
|
100
|
91
|
90
|
49
|
54
|
45
|
43
|
39
|
52
|
48
|
51
|
47
|
37
|
48
|
51
|
46
|
32
|
|
2023/04
|
79
|
50
|
28
|
35
|
26
|
57
|
79
|
81
|
80
|
87
|
93
|
69
|
38
|
65
|
74
|
78
|
69
|
64
|
68
|
53
|
36
|
18
|
20
|
25
|
40
|
58
|
70
|
61
|
61
|
73
|
|
|
2023/03
|
70
|
67
|
72
|
83
|
87
|
74
|
70
|
71
|
79
|
52
|
70
|
56
|
59
|
61
|
78
|
46
|
31
|
37
|
29
|
24
|
51
|
60
|
34
|
26
|
37
|
31
|
32
|
41
|
52
|
59
|
62
|
|
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