Roskilde, Sj Lland, Denmark Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Roskilde, Sj Lland, Denmark
AQI Trends: Highest and Lowest
Same Day Analysis (27th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 31 of Good air quality on the same day.
Day & Night AQI Trend: 26th Sep - 27th Sep 2026
Roskilde, Sj Lland, Denmark
6 AM26th Sep 2026
7 PM
5 AM27th Sep 2026
59AQI
22AQI
54AQI
25AQI
In the last 24 hours,
Roskilde's AQI reached its highest point of 59 at 8 AM during the Day, while the lowest point, 22, was recorded at 3 PM during the Day between 26th Sep and 27th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Roskilde, Sj Lland, Denmark
17°C15/20°C
17°C15/20°C
17°C15/21°C
17°C14/20°C
16°C13/18°C
16°C14/20°C
15°C14/17°C
15°C14/18°C
16°C14/18°C
18°C14/21°C
17°C15/20°C
16°C13/19°C
14°C12/17°C
15°C11/19°C
16°C13/19°C
16°C14/19°C
14°C11/17°C
16°C13/20°C
16°C13/18°C
14°C12/17°C
15°C12/18°C
15°C14/17°C
15°C13/17°C
13°C12/15°C
14°C11/17°C
14°C12/16°C
14°C12/17°C
14°C12/17°C
14°C12/17°C
14°C12/16°C
31AQI
27AQI
31AQI
28AQI
2026 Days Vs Air Quality
Roskilde, Sj Lland, Denmark
91%
243
8%
21
1%
3
Total number of days with different AQI categories in last 271 days in 2026 (94 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 271 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Roskilde, Sj Lland, Denmark
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI (US)
11AQI (US)
12AQI (US)
15AQI (US)
29AQI (US)
69AQI (US)
50AQI (US)
51AQI (US)
23AQI (US)
10AQI (US)
22AQI (US)
40AQI (US)
41AQI (US)
27AQI (US)
28AQI (US)
52AQI (US)
59AQI (US)
64AQI (US)
78AQI (US)
72AQI (US)
65AQI (US)
63AQI (US)
32AQI (US)
24AQI (US)
64AQI (US)
16AQI (US)
25AQI (US)
19AQI (US)
28AQI (US)
44AQI (US)
41AQI (US)
39AQI (US)
26AQI (US)
39AQI (US)
36AQI (US)
49AQI (US)
45AQI (US)
27AQI (US)
32AQI (US)
50AQI (US)
74AQI (US)
62AQI (US)
22AQI (US)
15AQI (US)
21AQI (US)
13AQI (US)
25AQI (US)
43AQI (US)
28AQI (US)
25AQI (US)
32AQI (US)
24AQI (US)
20AQI (US)
21AQI (US)
32AQI (US)
33AQI (US)
34AQI (US)
47AQI (US)
43AQI (US)
17AQI (US)
25AQI (US)
13AQI (US)
18AQI (US)
32AQI (US)
28AQI (US)
80AQI (US)
112AQI (US)
101AQI (US)
109AQI (US)
65AQI (US)
22AQI (US)
17AQI (US)
15AQI (US)
27AQI (US)
16AQI (US)
25AQI (US)
14AQI (US)
52AQI (US)
33AQI (US)
27AQI (US)
38AQI (US)
57AQI (US)
81AQI (US)
36AQI (US)
14AQI (US)
20AQI (US)
31AQI (US)
22AQI (US)
21AQI (US)
18AQI (US)
12AQI (US)
27AQI (US)
15AQI (US)
22AQI (US)
41AQI (US)
13AQI (US)
19AQI (US)
20AQI (US)
19AQI (US)
25AQI (US)
35AQI (US)
51AQI (US)
41AQI (US)
16AQI (US)
46AQI (US)
32AQI (US)
35AQI (US)
46AQI (US)
20AQI (US)
23AQI (US)
17AQI (US)
14AQI (US)
12AQI (US)
18AQI (US)
25AQI (US)
35AQI (US)
48AQI (US)
55AQI (US)
29AQI (US)
21AQI (US)
55AQI (US)
30AQI (US)
14AQI (US)
13AQI (US)
14AQI (US)
14AQI (US)
20AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
12AQI (US)
23AQI (US)
36AQI (US)
40AQI (US)
34AQI (US)
34AQI (US)
33AQI (US)
35AQI (US)
33AQI (US)
38AQI (US)
51AQI (US)
43AQI (US)
34AQI (US)
20AQI (US)
19AQI (US)
21AQI (US)
18AQI (US)
15AQI (US)
25AQI (US)
28AQI (US)
20AQI (US)
18AQI (US)
14AQI (US)
18AQI (US)
12AQI (US)
18AQI (US)
14AQI (US)
19AQI (US)
18AQI (US)
17AQI (US)
16AQI (US)
20AQI (US)
10AQI (US)
18AQI (US)
22AQI (US)
21AQI (US)
22AQI (US)
29AQI (US)
16AQI (US)
20AQI (US)
18AQI (US)
36AQI (US)
20AQI (US)
18AQI (US)
26AQI (US)
30AQI (US)
13AQI (US)
20AQI (US)
17AQI (US)
15AQI (US)
19AQI (US)
14AQI (US)
11AQI (US)
14AQI (US)
11AQI (US)
17AQI (US)
14AQI (US)
12AQI (US)
14AQI (US)
14AQI (US)
17AQI (US)
21AQI (US)
18AQI (US)
16AQI (US)
28AQI (US)
47AQI (US)
32AQI (US)
18AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
33AQI (US)
27AQI (US)
29AQI (US)
24AQI (US)
40AQI (US)
37AQI (US)
25AQI (US)
27AQI (US)
33AQI (US)
31AQI (US)
34AQI (US)
29AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
29AQI (US)
28AQI (US)
28AQI (US)
33AQI (US)
31AQI (US)
29AQI (US)
31AQI (US)
19AQI (US)
20AQI (US)
24AQI (US)
20AQI (US)
23AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
21AQI (US)
28AQI (US)
29AQI (US)
45AQI (US)
38AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
19AQI (US)
25AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
33AQI (US)
25AQI (US)
25AQI (US)
30AQI (US)
24AQI (US)
26AQI (US)
34AQI (US)
30AQI (US)
31AQI (US)
23AQI (US)
30AQI (US)
41AQI (US)
38AQI (US)
36AQI (US)
40AQI (US)
30AQI (US)
27AQI (US)
27AQI (US)
33AQI (US)
31AQI (US)
39AQI (US)
34AQI (US)
38AQI (US)
28AQI (US)
27AQI (US)
20AQI (US)
22AQI (US)
27AQI (US)
29AQI (US)
No. of days
202629AQI (US)
Highest AQI (US) recorded in
January39AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202533AQI (US)
Highest AQI (US) recorded in
March52AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202427AQI (US)
Highest AQI (US) recorded in
May32AQI (US)
Lowest AQI (US) recorded in
February23AQI (US)
202326AQI (US)
Highest AQI (US) recorded in
May33AQI (US)
Lowest AQI (US) recorded in
November19AQI (US)
202225AQI (US)
Highest AQI (US) recorded in
April30AQI (US)
Lowest AQI (US) recorded in
December18AQI (US)
202125AQI (US)
Highest AQI (US) recorded in
April32AQI (US)
Lowest AQI (US) recorded in
January18AQI (US)
202025AQI (US)
Highest AQI (US) recorded in
March31AQI (US)
Lowest AQI (US) recorded in
December17AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Roskilde's annual 2026 AQI (US) (29) shows an average percentage change of 9.1% (worsened AQI (US)) compared to previous years: 2020 (25), 2021 (25), 2022 (25), 2023 (26), 2024 (27), 2025 (33).