Air Quality
Good
Some pollutants may slightly affect very few hypersensitive individuals.
PM2.5
PM10
O3
CO
SO2
NO2
Some pollutants may slightly affect very few hypersensitive individuals.
Advise
Only very few hypersensitive people should reduce outdoor activities.
Air Quality
Today
20 Apr
Sun
21 Apr
Mon
22 Apr
Tue
23 Apr
Wed
24 Apr
Thu
25 Apr
Fri
26 Apr
Real-time AQI (Monitoring Station in Yan'an)
枣园
505
PM2.5
50
PM10
115
O3
0.5
CO
9
SO2
5
NO2
延大医附院
5514
PM2.5
60 *
PM10
113
O3
0.3
CO
4
SO2
4
NO2
百米大道
5413
PM2.5
58 *
PM10
110
O3
0.4
CO
3
SO2
6
NO2
西北局旧址
5416
PM2.5
58 *
PM10
112
O3
0.4
CO
5
SO2
7
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