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
27 Apr
Sun
28 Apr
Mon
29 Apr
Tue
30 Apr
Wed
1 May
Thu
2 May
Fri
3 May
Real-time AQI (Monitoring Station in Yan'an)
枣园
4011
PM2.5
34
PM10
126
O3
0.3
CO
9
SO2
8
NO2
延大医附院
3817
PM2.5
33
PM10
119
O3
0.6
CO
4
SO2
11
NO2
百米大道
4822
PM2.5
48
PM10
114
O3
0.5
CO
2
SO2
13
NO2
西北局旧址
3826
PM2.5
34
PM10
117
O3
0.5
CO
5
SO2
15
NO2
Air quality in the last 12 months (Yan'an)
|
2024/02
|
110
|
97
|
93
|
102
|
91
|
82
|
73
|
76
|
106
|
132
|
64
|
65
|
64
|
151
|
66
|
60
|
60
|
391
|
282
|
60
|
51
|
56
|
54
|
80
|
98
|
101
|
87
|
94
|
60
|
||
|
2024/01
|
63
|
60
|
70
|
55
|
53
|
51
|
55
|
71
|
68
|
70
|
70
|
68
|
75
|
72
|
54
|
85
|
94
|
71
|
81
|
65
|
24
|
29
|
41
|
41
|
47
|
68
|
63
|
62
|
68
|
84
|
87
|
|
2023/12
|
48
|
57
|
68
|
63
|
121
|
129
|
77
|
70
|
71
|
84
|
47
|
63
|
57
|
54
|
53
|
53
|
47
|
63
|
62
|
52
|
40
|
53
|
64
|
62
|
66
|
69
|
83
|
97
|
109
|
71
|
56
|
|
2023/11
|
52
|
81
|
72
|
59
|
45
|
46
|
54
|
58
|
55
|
41
|
45
|
35
|
50
|
53
|
72
|
107
|
52
|
49
|
55
|
60
|
70
|
98
|
48
|
51
|
70
|
76
|
71
|
70
|
37
|
40
|
|
|
2023/10
|
39
|
38
|
33
|
37
|
32
|
22
|
30
|
31
|
35
|
38
|
52
|
46
|
36
|
40
|
42
|
44
|
47
|
42
|
34
|
36
|
36
|
41
|
47
|
45
|
50
|
54
|
52
|
50
|
48
|
53
|
49
|
|
2023/09
|
36
|
41
|
46
|
44
|
44
|
51
|
52
|
62
|
25
|
32
|
31
|
32
|
45
|
43
|
43
|
32
|
29
|
27
|
29
|
33
|
28
|
36
|
38
|
26
|
28
|
35
|
43
|
52
|
46
|
38
|
|
|
2023/08
|
32
|
36
|
36
|
33
|
38
|
40
|
38
|
45
|
43
|
42
|
36
|
33
|
36
|
37
|
43
|
46
|
75
|
56
|
57
|
41
|
39
|
40
|
33
|
31
|
30
|
16
|
23
|
30
|
30
|
38
|
45
|
|
2023/07
|
42
|
40
|
26
|
51
|
57
|
40
|
48
|
40
|
44
|
53
|
51
|
43
|
34
|
42
|
37
|
48
|
48
|
53
|
49
|
46
|
44
|
40
|
44
|
43
|
38
|
42
|
38
|
27
|
32
|
26
|
19
|
|
2023/06
|
34
|
44
|
31
|
30
|
38
|
37
|
43
|
43
|
44
|
48
|
43
|
41
|
45
|
53
|
46
|
46
|
37
|
31
|
38
|
48
|
49
|
54
|
45
|
39
|
45
|
51
|
48
|
34
|
43
|
47
|
|
|
2023/05
|
58
|
56
|
60
|
49
|
53
|
25
|
23
|
39
|
53
|
41
|
42
|
52
|
55
|
68
|
65
|
55
|
59
|
53
|
50
|
93
|
52
|
35
|
42
|
40
|
48
|
55
|
25
|
22
|
20
|
38
|
42
|
|
2023/04
|
48
|
60
|
15
|
24
|
42
|
75
|
60
|
67
|
85
|
203
|
349
|
158
|
127
|
85
|
108
|
170
|
128
|
99
|
148
|
278
|
37
|
19
|
21
|
22
|
41
|
60
|
64
|
230
|
82
|
49
|
|
|
2023/03
|
68
|
59
|
69
|
70
|
63
|
62
|
64
|
103
|
87
|
78
|
202
|
109
|
72
|
95
|
56
|
50
|
46
|
67
|
71
|
65
|
130
|
299
|
234
|
77
|
83
|
71
|
60
|
60
|
56
|
62
|
56
|
|
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