Air Quality
Excellent
No health implications.
29
PM2.5
50
PM10
11
O3
1.0
CO
6
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Apr
52
Good
Sun
21 Apr
49
Excellent
Mon
22 Apr
46
Excellent
Tue
23 Apr
55
Good
Wed
24 Apr
53
Good
Thu
25 Apr
55
Good
Fri
26 Apr
55
Good
Air quality in the last 12 months (Hechuan)
|
2024/02
|
140
|
134
|
49
|
39
|
45
|
60
|
56
|
64
|
75
|
193
|
149
|
136
|
143
|
150
|
36
|
39
|
70
|
92
|
137
|
225
|
43
|
18
|
29
|
38
|
56
|
64
|
82
|
102
|
86
|
||
|
2024/01
|
121
|
124
|
84
|
96
|
120
|
159
|
144
|
117
|
103
|
110
|
138
|
134
|
221
|
185
|
189
|
63
|
44
|
54
|
52
|
47
|
39
|
25
|
38
|
48
|
52
|
72
|
78
|
97
|
110
|
129
|
158
|
|
2023/12
|
32
|
46
|
67
|
67
|
71
|
91
|
100
|
128
|
139
|
165
|
98
|
38
|
60
|
71
|
38
|
50
|
60
|
68
|
89
|
88
|
96
|
110
|
122
|
112
|
142
|
145
|
160
|
195
|
250
|
206
|
194
|
|
2023/11
|
61
|
80
|
65
|
43
|
40
|
64
|
76
|
91
|
86
|
79
|
47
|
19
|
21
|
36
|
34
|
43
|
57
|
82
|
87
|
94
|
122
|
123
|
139
|
181
|
136
|
57
|
61
|
97
|
83
|
58
|
|
|
2023/10
|
34
|
18
|
23
|
23
|
12
|
15
|
23
|
35
|
43
|
33
|
43
|
27
|
34
|
51
|
62
|
86
|
78
|
79
|
21
|
36
|
49
|
67
|
90
|
115
|
79
|
79
|
20
|
28
|
48
|
50
|
68
|
|
2023/09
|
77
|
74
|
85
|
97
|
99
|
72
|
63
|
57
|
58
|
98
|
79
|
20
|
36
|
49
|
57
|
81
|
98
|
72
|
54
|
18
|
24
|
17
|
17
|
17
|
16
|
25
|
33
|
35
|
29
|
36
|
|
|
2023/08
|
35
|
33
|
27
|
38
|
57
|
30
|
36
|
39
|
42
|
45
|
44
|
40
|
37
|
45
|
55
|
57
|
73
|
71
|
69
|
68
|
49
|
65
|
75
|
59
|
37
|
21
|
24
|
30
|
50
|
35
|
69
|
|
2023/07
|
52
|
37
|
37
|
29
|
44
|
48
|
51
|
68
|
59
|
53
|
41
|
54
|
38
|
28
|
44
|
59
|
59
|
56
|
50
|
34
|
27
|
42
|
56
|
39
|
38
|
43
|
26
|
24
|
35
|
45
|
65
|
|
2023/06
|
34
|
28
|
21
|
22
|
28
|
40
|
46
|
61
|
76
|
68
|
58
|
64
|
60
|
64
|
45
|
38
|
40
|
54
|
62
|
83
|
42
|
52
|
59
|
43
|
49
|
76
|
54
|
35
|
44
|
65
|
|
|
2023/05
|
66
|
64
|
59
|
55
|
47
|
36
|
24
|
25
|
33
|
32
|
40
|
54
|
64
|
88
|
86
|
50
|
59
|
58
|
68
|
85
|
48
|
27
|
39
|
46
|
68
|
87
|
61
|
66
|
48
|
58
|
36
|
|
2023/04
|
55
|
47
|
35
|
31
|
29
|
56
|
72
|
75
|
73
|
85
|
72
|
59
|
67
|
73
|
72
|
78
|
87
|
65
|
61
|
54
|
75
|
21
|
20
|
20
|
32
|
48
|
57
|
48
|
65
|
71
|
|
|
2023/03
|
112
|
105
|
84
|
89
|
106
|
123
|
115
|
76
|
94
|
58
|
57
|
57
|
42
|
54
|
81
|
46
|
34
|
36
|
35
|
45
|
69
|
81
|
36
|
21
|
24
|
32
|
27
|
39
|
55
|
50
|
64
|
|
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