Air Pollution in Cologne: Real-time Air Quality Index and smog alert.
Pollution and air quality forecast for Cologne. Today is Friday, May 2, 2025. The following air pollution values have been recorded for Cologne:- ozone (O3) - 30 (Good)
- nitrogen dioxide (NO2) - 33 (Good)
- particulate matter (PM10) suspended dust - 22 (Moderate)
- particulate matter (PM2.5) dust - 15 (Moderate)
What is the air quality in Cologne today? Is the air polluted in Cologne?. Is there smog?
How is the O3 level today in Cologne? (ozone (O3))
30 (Good)
How high is the level of NO2? (nitrogen dioxide (NO2))
33 (Good)
What is the level of PM10 today in Cologne? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Cologne is:
22 (Moderate)
The highest PM10 values usually occur in month: 27 (September 2017).
The lowest value of particulate matter PM10 pollution in Cologne is usually recorded in: October (3.6).
What is the current level of PM2.5 in Cologne? (particulate matter (PM2.5) dust)
Today's PM2.5 level is:
15 (Moderate)
For comparison, the highest level of PM2.5 in Cologne in the last 7 days was: 38 (Thursday, January 11, 2024) and the lowest: 11 (Sunday, January 14, 2024).
The highest PM2.5 values were recorded: 22 (June 2018).
The lowest level of particulate matter PM2.5 pollution occurs in month: October (2.6).
Current data Wednesday, January 17, 2024, 9:00 AM
O3 30 (Good)
NO2 33 (Good)
6 (Good)
PM10 22 (Moderate)
PM2,5 15 (Moderate)
Data on air pollution from recent days in Cologne
index
2024-01-10
2024-01-11
2024-01-12
2024-01-13
2024-01-14
2024-01-15
2024-01-16
2024-01-17
pm10
30
Moderate
48
Moderate
32
Moderate
21
Moderate
11
Good
12
Good
20
Moderate
18
Good
o3
6
Good
3
Good
9
Good
27
Good
38
Good
45
Good
42
Good
24
Good
no2
49
Moderate
50
Moderate
42
Moderate
29
Good
18
Good
22
Good
31
Good
35
Good
no
58
Good
84
Good
24
Good
11
Good
6
Good
7
Good
12
Good
4
Good
pm25
21
Moderate
38
Unhealthy for Sensitive Groups
28
Moderate
20
Moderate
11
Good
11
Good
11
Good
14
Moderate
data source »
Air pollution in Cologne from September 2017 to May 2020
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-10
2019-09
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-11
2018-10
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
pm10
14 (Good)
22 (Moderate)
16 (Good)
13 (Good)
20 (Good)
17 (Good)
3.6 (Good)
6 (Good)
15 (Good)
19 (Good)
19 (Good)
24 (Moderate)
20 (Moderate)
25 (Moderate)
21 (Moderate)
16 (Good)
19 (Good)
26 (Moderate)
21 (Moderate)
21 (Moderate)
22 (Moderate)
27 (Moderate)
26 (Moderate)
24 (Moderate)
23 (Moderate)
25 (Moderate)
19 (Good)
20 (Moderate)
23 (Moderate)
22 (Moderate)
27 (Moderate)
no2
30 (Good)
32 (Good)
24 (Good)
19 (Good)
31 (Good)
30 (Good)
7.5 (Good)
9.5 (Good)
19 (Good)
31 (Good)
29 (Good)
34 (Good)
30 (Good)
43 (Moderate)
29 (Good)
28 (Good)
31 (Good)
35 (Good)
39 (Good)
36 (Good)
43 (Moderate)
33 (Good)
38 (Good)
38 (Good)
37 (Good)
41 (Moderate)
34 (Good)
35 (Good)
38 (Good)
35 (Good)
39 (Good)
o3
36 (Good)
37 (Good)
47 (Good)
54 (Good)
25 (Good)
12 (Good)
9.5 (Good)
13 (Good)
49 (Good)
40 (Good)
37 (Good)
39 (Good)
43 (Good)
15 (Good)
31 (Good)
28 (Good)
13 (Good)
16 (Good)
18 (Good)
31 (Good)
32 (Good)
27 (Good)
33 (Good)
48 (Good)
43 (Good)
33 (Good)
33 (Good)
28 (Good)
21 (Good)
27 (Good)
20 (Good)
pm25
8 (Good)
12 (Good)
9.8 (Good)
7.7 (Good)
15 (Moderate)
13 (Good)
2.6 (Good)
4.8 (Good)
9.4 (Good)
12 (Good)
13 (Moderate)
17 (Moderate)
13 (Moderate)
18 (Moderate)
17 (Moderate)
13 (Good)
15 (Moderate)
18 (Moderate)
14 (Moderate)
13 (Moderate)
16 (Moderate)
22 (Moderate)
17 (Moderate)
15 (Moderate)
19 (Moderate)
19 (Moderate)
13 (Good)
13 (Good)
15 (Moderate)
11 (Good)
21 (Moderate)
so2
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
- (Good)
0.94 (Good)
0.63 (Good)
0.47 (Good)
0.59 (Good)
1.2 (Good)
0.96 (Good)
0.73 (Good)
0.88 (Good)
1.2 (Good)
1.6 (Good)
1.4 (Good)
1.2 (Good)
1.4 (Good)
0.97 (Good)
0.99 (Good)
0.75 (Good)
data source »
Quality of life in Cologne
Green and Parks in the City
Cologne
74%
Luxembourg: 83%
Netherlands: 82%
Czech Republic: 77%
Belgium: 64%
Liechtenstein: 88%
particulate matter PM2.5
Cologne
15 (Moderate)
Pleasure of spending time in the city
Cologne
77%
Luxembourg: 85%
Netherlands: 88%
Czech Republic: 77%
Belgium: 64%
Liechtenstein: 94%
particulate matter PM10
Cologne
20 (Moderate)
Air Pollution
Cologne
33%
Luxembourg: 19%
Netherlands: 21%
Czech Republic: 35%
Belgium: 45%
Liechtenstein: 6.3%
Garbage Disposal
Cologne
75%
Luxembourg: 84%
Netherlands: 79%
Czech Republic: 74%
Belgium: 54%
Liechtenstein: 100%
Availability and quality of drinking water
Cologne
78%
Luxembourg: 83%
Netherlands: 92%
Czech Republic: 84%
Belgium: 70%
Liechtenstein: 100%
Cleanliness and tidiness
Cologne
60%
Luxembourg: 82%
Netherlands: 77%
Czech Republic: 65%
Belgium: 46%
Liechtenstein: 94%
Noise and Light pollution
Cologne
36%
Luxembourg: 29%
Netherlands: 31%
Czech Republic: 44%
Belgium: 54%
Liechtenstein: 19%
Water Pollution
Cologne
24%
Luxembourg: 19%
Netherlands: 17%
Czech Republic: 28%
Belgium: 42%
Liechtenstein: 0%
Source: Numbeo
Köln-Chorweiler
Wednesday, January 17, 2024, 9:00 AM
O3 29 (Good)
ozone (O3)
NO2 28 (Good)
nitrogen dioxide (NO2)
2.5 (Good)
index_name_no
PM10 12 (Good)
particulate matter (PM10) suspended dust
Köln-Rodenkirchen
Wednesday, January 17, 2024, 9:00 AM
O3 31 (Good)
ozone (O3)
1.8 (Good)
index_name_no
PM10 14 (Good)
particulate matter (PM10) suspended dust
NO2 29 (Good)
nitrogen dioxide (NO2)
Köln Clevischer Ring 3
Wednesday, January 17, 2024, 9:00 AM
PM2,5 16 (Moderate)
particulate matter (PM2.5) dust
13 (Good)
index_name_no
PM10 34 (Moderate)
particulate matter (PM10) suspended dust
NO2 41 (Moderate)
nitrogen dioxide (NO2)
Köln Turiner Straße
Wednesday, January 17, 2024, 9:00 AM
PM10 29 (Moderate)
particulate matter (PM10) suspended dust
4.8 (Good)
index_name_no
PM2,5 14 (Moderate)
particulate matter (PM2.5) dust
NO2 36 (Good)
nitrogen dioxide (NO2)
Köln-Chorweiler
index
2024-01-17
2024-01-16
2024-01-15
2024-01-14
2024-01-13
2024-01-12
2024-01-11
2024-01-10
pm10
13
13
7.4
7.3
18
30
43
30
o3
21
42
48
40
32
12
2
4.2
no2
35
24
13
9.9
17
31
42
43
no
2.4
3.1
1.1
0.63
0.98
4.4
64
56
Köln-Rodenkirchen
index
2024-01-17
2024-01-16
2024-01-15
2024-01-14
2024-01-13
2024-01-12
2024-01-11
2024-01-10
o3
26
41
42
36
22
6.2
3.7
7.7
pm10
19
14
11
10
18
29
44
29
no2
29
23
21
13
23
37
45
43
no
0.97
2
2.7
0.44
4.6
16
75
60
Köln Clevischer Ring 3
index
2024-01-17
2024-01-16
2024-01-15
2024-01-14
2024-01-13
2024-01-12
2024-01-11
2024-01-10
pm25
14
11
11
12
21
28
37
23
no2
39
43
28
25
39
53
56
57
no
10
29
16
13
27
51
113
81
pm10
22
25
15
14
25
34
52
35
Köln Turiner Straße
index
2024-01-17
2024-01-16
2024-01-15
2024-01-14
2024-01-13
2024-01-12
2024-01-11
2024-01-10
pm10
19
27
16
13
22
34
55
28
no2
38
34
26
23
36
47
58
53
pm25
13
11
11
11
19
28
39
20
no
3.2
12
10
8.3
13
24
83
34
DENW053
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-10
2019-09
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-11
2018-10
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
no2
20
27
18
14
27
27
6.7
6.3
13
22
19
25
23
39
23
23
27
28
30
24
29
20
23
22
25
32
25
23
25
21
28
o3
46
43
50
57
26
15
10
14
54
52
46
42
48
16
34
29
14
18
20
37
42
34
42
50
45
34
36
31
24
31
22
pm10
15
23
15
13
19
14
3.8
5
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
DENW059
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-10
2019-09
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-11
2018-10
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
pm10
10
17
12
9.7
16
14
3
6.1
17
16
17
21
17
20
18
13
15
20
16
16
19
22
21
20
19
21
15
17
18
18
21
so2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.94
0.63
0.47
0.59
1.2
0.96
0.73
0.88
1.2
1.6
1.4
1.2
1.4
0.97
0.99
0.75
no2
30
35
22
15
26
27
4.8
8.8
23
35
30
30
25
36
25
22
25
26
29
31
40
28
33
24
27
30
25
26
26
24
25
o3
27
32
44
50
24
9.8
8.8
11
44
28
28
36
39
14
29
26
13
13
16
26
23
20
24
46
42
33
31
26
18
22
18
DENW211
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-10
2019-09
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-11
2018-10
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
pm10
17
26
22
18
25
21
4.8
8.4
12
21
22
26
24
29
25
19
23
32
25
26
25
31
31
29
28
29
23
23
28
25
34
no2
36
35
29
23
36
33
9.5
14
20
33
38
46
39
52
38
36
40
48
54
53
61
50
61
60
57
56
50
49
58
57
64
DENW212
2017-09 2020-05
index
2020-05
2020-04
2020-03
2020-02
2020-01
2019-12
2019-10
2019-09
2019-07
2019-06
2019-05
2019-04
2019-03
2019-02
2019-01
2018-12
2018-11
2018-10
2018-09
2018-08
2018-07
2018-06
2018-05
2018-04
2018-03
2018-02
2018-01
2017-12
2017-11
2017-10
2017-09
pm25
8
12
9.8
7.7
15
13
2.6
4.8
9.4
12
13
17
13
18
17
13
15
18
14
13
16
22
17
15
19
19
13
13
15
11
21
no2
32
31
26
22
37
34
9.2
9.1
19
35
30
35
33
44
31
31
33
39
42
36
41
36
37
44
41
46
38
40
43
40
41
pm10
13
21
15
11
18
16
3.1
4.8
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
* Pollution data source:
https://openaq.org
(EEA Germany)
The data is licensed under CC-By 4.0
O3 30 (Good)
NO2 33 (Good)
6 (Good)
PM10 22 (Moderate)
PM2,5 15 (Moderate)
Data on air pollution from recent days in Cologne
| index | 2024-01-10 | 2024-01-11 | 2024-01-12 | 2024-01-13 | 2024-01-14 | 2024-01-15 | 2024-01-16 | 2024-01-17 |
|---|---|---|---|---|---|---|---|---|
| pm10 | 30 Moderate |
48 Moderate |
32 Moderate |
21 Moderate |
11 Good |
12 Good |
20 Moderate |
18 Good |
| o3 | 6 Good |
3 Good |
9 Good |
27 Good |
38 Good |
45 Good |
42 Good |
24 Good |
| no2 | 49 Moderate |
50 Moderate |
42 Moderate |
29 Good |
18 Good |
22 Good |
31 Good |
35 Good |
| no | 58 Good |
84 Good |
24 Good |
11 Good |
6 Good |
7 Good |
12 Good |
4 Good |
| pm25 | 21 Moderate |
38 Unhealthy for Sensitive Groups |
28 Moderate |
20 Moderate |
11 Good |
11 Good |
11 Good |
14 Moderate |
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-10 | 2019-09 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm10 | 14 (Good) | 22 (Moderate) | 16 (Good) | 13 (Good) | 20 (Good) | 17 (Good) | 3.6 (Good) | 6 (Good) | 15 (Good) | 19 (Good) | 19 (Good) | 24 (Moderate) | 20 (Moderate) | 25 (Moderate) | 21 (Moderate) | 16 (Good) | 19 (Good) | 26 (Moderate) | 21 (Moderate) | 21 (Moderate) | 22 (Moderate) | 27 (Moderate) | 26 (Moderate) | 24 (Moderate) | 23 (Moderate) | 25 (Moderate) | 19 (Good) | 20 (Moderate) | 23 (Moderate) | 22 (Moderate) | 27 (Moderate) |
| no2 | 30 (Good) | 32 (Good) | 24 (Good) | 19 (Good) | 31 (Good) | 30 (Good) | 7.5 (Good) | 9.5 (Good) | 19 (Good) | 31 (Good) | 29 (Good) | 34 (Good) | 30 (Good) | 43 (Moderate) | 29 (Good) | 28 (Good) | 31 (Good) | 35 (Good) | 39 (Good) | 36 (Good) | 43 (Moderate) | 33 (Good) | 38 (Good) | 38 (Good) | 37 (Good) | 41 (Moderate) | 34 (Good) | 35 (Good) | 38 (Good) | 35 (Good) | 39 (Good) |
| o3 | 36 (Good) | 37 (Good) | 47 (Good) | 54 (Good) | 25 (Good) | 12 (Good) | 9.5 (Good) | 13 (Good) | 49 (Good) | 40 (Good) | 37 (Good) | 39 (Good) | 43 (Good) | 15 (Good) | 31 (Good) | 28 (Good) | 13 (Good) | 16 (Good) | 18 (Good) | 31 (Good) | 32 (Good) | 27 (Good) | 33 (Good) | 48 (Good) | 43 (Good) | 33 (Good) | 33 (Good) | 28 (Good) | 21 (Good) | 27 (Good) | 20 (Good) |
| pm25 | 8 (Good) | 12 (Good) | 9.8 (Good) | 7.7 (Good) | 15 (Moderate) | 13 (Good) | 2.6 (Good) | 4.8 (Good) | 9.4 (Good) | 12 (Good) | 13 (Moderate) | 17 (Moderate) | 13 (Moderate) | 18 (Moderate) | 17 (Moderate) | 13 (Good) | 15 (Moderate) | 18 (Moderate) | 14 (Moderate) | 13 (Moderate) | 16 (Moderate) | 22 (Moderate) | 17 (Moderate) | 15 (Moderate) | 19 (Moderate) | 19 (Moderate) | 13 (Good) | 13 (Good) | 15 (Moderate) | 11 (Good) | 21 (Moderate) |
| so2 | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | 0.94 (Good) | 0.63 (Good) | 0.47 (Good) | 0.59 (Good) | 1.2 (Good) | 0.96 (Good) | 0.73 (Good) | 0.88 (Good) | 1.2 (Good) | 1.6 (Good) | 1.4 (Good) | 1.2 (Good) | 1.4 (Good) | 0.97 (Good) | 0.99 (Good) | 0.75 (Good) |
Green and Parks in the City
Cologne 74%
Luxembourg: 83% Netherlands: 82% Czech Republic: 77% Belgium: 64% Liechtenstein: 88%particulate matter PM2.5
Cologne 15 (Moderate)
Pleasure of spending time in the city
Cologne 77%
Luxembourg: 85% Netherlands: 88% Czech Republic: 77% Belgium: 64% Liechtenstein: 94%particulate matter PM10
Cologne 20 (Moderate)
Air Pollution
Cologne 33%
Luxembourg: 19% Netherlands: 21% Czech Republic: 35% Belgium: 45% Liechtenstein: 6.3%Garbage Disposal
Cologne 75%
Luxembourg: 84% Netherlands: 79% Czech Republic: 74% Belgium: 54% Liechtenstein: 100%Availability and quality of drinking water
Cologne 78%
Luxembourg: 83% Netherlands: 92% Czech Republic: 84% Belgium: 70% Liechtenstein: 100%Cleanliness and tidiness
Cologne 60%
Luxembourg: 82% Netherlands: 77% Czech Republic: 65% Belgium: 46% Liechtenstein: 94%Noise and Light pollution
Cologne 36%
Luxembourg: 29% Netherlands: 31% Czech Republic: 44% Belgium: 54% Liechtenstein: 19%Water Pollution
Cologne 24%
Luxembourg: 19% Netherlands: 17% Czech Republic: 28% Belgium: 42% Liechtenstein: 0%O3 29 (Good)
ozone (O3)NO2 28 (Good)
nitrogen dioxide (NO2)2.5 (Good)
index_name_noPM10 12 (Good)
particulate matter (PM10) suspended dustO3 31 (Good)
ozone (O3)1.8 (Good)
index_name_noPM10 14 (Good)
particulate matter (PM10) suspended dustNO2 29 (Good)
nitrogen dioxide (NO2)PM2,5 16 (Moderate)
particulate matter (PM2.5) dust13 (Good)
index_name_noPM10 34 (Moderate)
particulate matter (PM10) suspended dustNO2 41 (Moderate)
nitrogen dioxide (NO2)PM10 29 (Moderate)
particulate matter (PM10) suspended dust4.8 (Good)
index_name_noPM2,5 14 (Moderate)
particulate matter (PM2.5) dustNO2 36 (Good)
nitrogen dioxide (NO2)Köln-Chorweiler
| index | 2024-01-17 | 2024-01-16 | 2024-01-15 | 2024-01-14 | 2024-01-13 | 2024-01-12 | 2024-01-11 | 2024-01-10 |
|---|---|---|---|---|---|---|---|---|
| pm10 | 13 | 13 | 7.4 | 7.3 | 18 | 30 | 43 | 30 |
| o3 | 21 | 42 | 48 | 40 | 32 | 12 | 2 | 4.2 |
| no2 | 35 | 24 | 13 | 9.9 | 17 | 31 | 42 | 43 |
| no | 2.4 | 3.1 | 1.1 | 0.63 | 0.98 | 4.4 | 64 | 56 |
Köln-Rodenkirchen
| index | 2024-01-17 | 2024-01-16 | 2024-01-15 | 2024-01-14 | 2024-01-13 | 2024-01-12 | 2024-01-11 | 2024-01-10 |
|---|---|---|---|---|---|---|---|---|
| o3 | 26 | 41 | 42 | 36 | 22 | 6.2 | 3.7 | 7.7 |
| pm10 | 19 | 14 | 11 | 10 | 18 | 29 | 44 | 29 |
| no2 | 29 | 23 | 21 | 13 | 23 | 37 | 45 | 43 |
| no | 0.97 | 2 | 2.7 | 0.44 | 4.6 | 16 | 75 | 60 |
Köln Clevischer Ring 3
| index | 2024-01-17 | 2024-01-16 | 2024-01-15 | 2024-01-14 | 2024-01-13 | 2024-01-12 | 2024-01-11 | 2024-01-10 |
|---|---|---|---|---|---|---|---|---|
| pm25 | 14 | 11 | 11 | 12 | 21 | 28 | 37 | 23 |
| no2 | 39 | 43 | 28 | 25 | 39 | 53 | 56 | 57 |
| no | 10 | 29 | 16 | 13 | 27 | 51 | 113 | 81 |
| pm10 | 22 | 25 | 15 | 14 | 25 | 34 | 52 | 35 |
Köln Turiner Straße
| index | 2024-01-17 | 2024-01-16 | 2024-01-15 | 2024-01-14 | 2024-01-13 | 2024-01-12 | 2024-01-11 | 2024-01-10 |
|---|---|---|---|---|---|---|---|---|
| pm10 | 19 | 27 | 16 | 13 | 22 | 34 | 55 | 28 |
| no2 | 38 | 34 | 26 | 23 | 36 | 47 | 58 | 53 |
| pm25 | 13 | 11 | 11 | 11 | 19 | 28 | 39 | 20 |
| no | 3.2 | 12 | 10 | 8.3 | 13 | 24 | 83 | 34 |
DENW053
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-10 | 2019-09 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| no2 | 20 | 27 | 18 | 14 | 27 | 27 | 6.7 | 6.3 | 13 | 22 | 19 | 25 | 23 | 39 | 23 | 23 | 27 | 28 | 30 | 24 | 29 | 20 | 23 | 22 | 25 | 32 | 25 | 23 | 25 | 21 | 28 |
| o3 | 46 | 43 | 50 | 57 | 26 | 15 | 10 | 14 | 54 | 52 | 46 | 42 | 48 | 16 | 34 | 29 | 14 | 18 | 20 | 37 | 42 | 34 | 42 | 50 | 45 | 34 | 36 | 31 | 24 | 31 | 22 |
| pm10 | 15 | 23 | 15 | 13 | 19 | 14 | 3.8 | 5 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
DENW059
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-10 | 2019-09 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm10 | 10 | 17 | 12 | 9.7 | 16 | 14 | 3 | 6.1 | 17 | 16 | 17 | 21 | 17 | 20 | 18 | 13 | 15 | 20 | 16 | 16 | 19 | 22 | 21 | 20 | 19 | 21 | 15 | 17 | 18 | 18 | 21 |
| so2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 0.94 | 0.63 | 0.47 | 0.59 | 1.2 | 0.96 | 0.73 | 0.88 | 1.2 | 1.6 | 1.4 | 1.2 | 1.4 | 0.97 | 0.99 | 0.75 |
| no2 | 30 | 35 | 22 | 15 | 26 | 27 | 4.8 | 8.8 | 23 | 35 | 30 | 30 | 25 | 36 | 25 | 22 | 25 | 26 | 29 | 31 | 40 | 28 | 33 | 24 | 27 | 30 | 25 | 26 | 26 | 24 | 25 |
| o3 | 27 | 32 | 44 | 50 | 24 | 9.8 | 8.8 | 11 | 44 | 28 | 28 | 36 | 39 | 14 | 29 | 26 | 13 | 13 | 16 | 26 | 23 | 20 | 24 | 46 | 42 | 33 | 31 | 26 | 18 | 22 | 18 |
DENW211
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-10 | 2019-09 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm10 | 17 | 26 | 22 | 18 | 25 | 21 | 4.8 | 8.4 | 12 | 21 | 22 | 26 | 24 | 29 | 25 | 19 | 23 | 32 | 25 | 26 | 25 | 31 | 31 | 29 | 28 | 29 | 23 | 23 | 28 | 25 | 34 |
| no2 | 36 | 35 | 29 | 23 | 36 | 33 | 9.5 | 14 | 20 | 33 | 38 | 46 | 39 | 52 | 38 | 36 | 40 | 48 | 54 | 53 | 61 | 50 | 61 | 60 | 57 | 56 | 50 | 49 | 58 | 57 | 64 |
DENW212
| index | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-10 | 2019-09 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pm25 | 8 | 12 | 9.8 | 7.7 | 15 | 13 | 2.6 | 4.8 | 9.4 | 12 | 13 | 17 | 13 | 18 | 17 | 13 | 15 | 18 | 14 | 13 | 16 | 22 | 17 | 15 | 19 | 19 | 13 | 13 | 15 | 11 | 21 |
| no2 | 32 | 31 | 26 | 22 | 37 | 34 | 9.2 | 9.1 | 19 | 35 | 30 | 35 | 33 | 44 | 31 | 31 | 33 | 39 | 42 | 36 | 41 | 36 | 37 | 44 | 41 | 46 | 38 | 40 | 43 | 40 | 41 |
| pm10 | 13 | 21 | 15 | 11 | 18 | 16 | 3.1 | 4.8 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |