Air Quality
Excellent
No health implications.
12
PM2.5
28
PM10
52
O3
0.4
CO
5
SO2
7
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
1 Jun
46
Excellent
Mon
2 Jun
52
Good
Tue
3 Jun
60
Good
Wed
4 Jun
67
Good
Thu
5 Jun
72
Good
Fri
6 Jun
76
Good
Sat
7 Jun
30
Excellent
Air quality in the last 12 months (Hechuan)
|
2025/04
|
38
|
53
|
64
|
64
|
67
|
84
|
76
|
75
|
85
|
88
|
50
|
358
|
251
|
147
|
107
|
89
|
89
|
83
|
61
|
39
|
48
|
46
|
57
|
52
|
56
|
49
|
41
|
53
|
51
|
45
|
|
|
2025/03
|
120
|
83
|
34
|
28
|
21
|
25
|
37
|
54
|
69
|
62
|
68
|
83
|
73
|
70
|
39
|
32
|
28
|
36
|
46
|
55
|
72
|
107
|
89
|
63
|
67
|
84
|
119
|
61
|
22
|
31
|
32
|
|
2025/02
|
100
|
67
|
47
|
37
|
66
|
52
|
37
|
41
|
57
|
75
|
136
|
88
|
51
|
42
|
44
|
62
|
61
|
58
|
81
|
61
|
52
|
62
|
43
|
48
|
65
|
84
|
95
|
73
|
|||
|
2025/01
|
189
|
215
|
237
|
167
|
108
|
117
|
119
|
43
|
51
|
44
|
58
|
61
|
97
|
129
|
114
|
98
|
135
|
122
|
138
|
154
|
226
|
234
|
246
|
98
|
31
|
46
|
59
|
86
|
291
|
216
|
122
|
|
2024/12
|
116
|
139
|
113
|
74
|
35
|
29
|
36
|
35
|
46
|
62
|
59
|
55
|
50
|
58
|
75
|
87
|
138
|
165
|
132
|
104
|
135
|
104
|
91
|
104
|
130
|
128
|
150
|
145
|
177
|
123
|
134
|
|
2024/11
|
54
|
64
|
87
|
71
|
49
|
57
|
80
|
105
|
46
|
58
|
62
|
87
|
60
|
55
|
61
|
28
|
14
|
16
|
22
|
24
|
37
|
42
|
42
|
35
|
23
|
40
|
39
|
50
|
80
|
99
|
|
|
2024/10
|
23
|
31
|
37
|
53
|
73
|
62
|
48
|
57
|
86
|
104
|
73
|
40
|
52
|
56
|
81
|
117
|
29
|
49
|
49
|
17
|
24
|
26
|
58
|
93
|
100
|
96
|
38
|
70
|
110
|
106
|
96
|
|
2024/09
|
44
|
44
|
32
|
30
|
50
|
49
|
51
|
35
|
30
|
36
|
38
|
40
|
37
|
76
|
39
|
28
|
41
|
49
|
48
|
53
|
26
|
47
|
43
|
61
|
91
|
107
|
73
|
48
|
40
|
11
|
|
|
2024/08
|
35
|
31
|
21
|
28
|
34
|
34
|
35
|
26
|
31
|
35
|
55
|
68
|
73
|
76
|
85
|
65
|
66
|
73
|
63
|
67
|
68
|
46
|
31
|
33
|
21
|
34
|
52
|
40
|
34
|
39
|
28
|
|
2024/07
|
33
|
36
|
42
|
36
|
19
|
33
|
26
|
35
|
41
|
22
|
26
|
27
|
33
|
22
|
27
|
26
|
28
|
37
|
33
|
24
|
31
|
31
|
30
|
26
|
72
|
60
|
38
|
44
|
37
|
34
|
41
|
|
2024/06
|
68
|
31
|
41
|
28
|
39
|
31
|
40
|
39
|
33
|
39
|
46
|
40
|
54
|
57
|
58
|
43
|
35
|
29
|
33
|
31
|
23
|
40
|
45
|
46
|
43
|
40
|
19
|
20
|
29
|
40
|
|
|
2024/05
|
34
|
38
|
39
|
49
|
49
|
89
|
92
|
79
|
60
|
46
|
53
|
47
|
51
|
60
|
55
|
56
|
58
|
65
|
48
|
18
|
21
|
30
|
36
|
46
|
36
|
30
|
40
|
40
|
26
|
34
|
51
|
|
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