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!
August Air Quality Analysis
Roskilde, Sj Lland, Denmark
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Roskilde, Sj Lland, Denmark
4 AM1st Aug 2025
9 PM
3 AM2nd Aug 2025
27AQI
20AQI
25AQI
20AQI
In the last 24 hours,
Roskilde's AQI reached its highest point of 27 at 9 AM during the Day, while the lowest point, 20, was recorded at 5 AM during the Day between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Roskilde, Sj Lland, Denmark
18°C14/20°C
16°C11/21°C
16°C14/19°C
18°C15/23°C
16°C14/20°C
16°C12/20°C
17°C13/21°C
18°C13/22°C
18°C15/22°C
18°C15/21°C
19°C14/23°C
19°C16/24°C
19°C15/23°C
17°C15/18°C
20°C16/25°C
21°C17/26°C
23°C18/28°C
22°C18/27°C
20°C18/22°C
19°C16/23°C
19°C16/24°C
20°C17/24°C
21°C17/24°C
19°C15/23°C
19°C16/22°C
19°C15/22°C
18°C14/22°C
17°C13/21°C
17°C14/20°C
18°C14/22°C
--°C/°C
24AQI
24AQI
24AQI
24AQI
2025 Days Vs Air Quality
Roskilde, Sj Lland, Denmark
85%
180
15%
33
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 214 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Roskilde, Sj Lland, Denmark
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
28AQI
29AQI
26AQI
26AQI
25AQI
26AQI
27AQI
28AQI
24AQI
26AQI
27AQI
24AQI
32AQI
31AQI
30AQI
36AQI
35AQI
35AQI
35AQI
46AQI
50AQI
48AQI
44AQI
40AQI
38AQI
29AQI
26AQI
27AQI
28AQI
26AQI
29AQI
31AQI
37AQI
55AQI
56AQI
48AQI
39AQI
45AQI
53AQI
53AQI
50AQI
52AQI
53AQI
46AQI
39AQI
35AQI
32AQI
34AQI
41AQI
43AQI
63AQI
73AQI
66AQI
56AQI
53AQI
53AQI
52AQI
45AQI
42AQI
42AQI
44AQI
43AQI
52AQI
62AQI
74AQI
71AQI
74AQI
76AQI
75AQI
59AQI
51AQI
43AQI
37AQI
35AQI
29AQI
31AQI
36AQI
51AQI
54AQI
53AQI
55AQI
57AQI
60AQI
53AQI
51AQI
56AQI
53AQI
45AQI
38AQI
32AQI
31AQI
32AQI
32AQI
27AQI
23AQI
24AQI
24AQI
28AQI
27AQI
31AQI
35AQI
41AQI
47AQI
49AQI
49AQI
53AQI
40AQI
33AQI
40AQI
40AQI
47AQI
38AQI
37AQI
31AQI
28AQI
29AQI
29AQI
32AQI
30AQI
29AQI
28AQI
23AQI
19AQI
23AQI
21AQI
21AQI
18AQI
18AQI
20AQI
19AQI
19AQI
20AQI
20AQI
18AQI
19AQI
19AQI
17AQI
18AQI
23AQI
25AQI
21AQI
17AQI
17AQI
18AQI
19AQI
20AQI
18AQI
18AQI
19AQI
19AQI
20AQI
23AQI
22AQI
23AQI
21AQI
18AQI
17AQI
17AQI
19AQI
31AQI
28AQI
27AQI
25AQI
23AQI
24AQI
24AQI
28AQI
28AQI
26AQI
24AQI
22AQI
25AQI
23AQI
22AQI
19AQI
19AQI
19AQI
21AQI
22AQI
21AQI
20AQI
19AQI
20AQI
18AQI
18AQI
17AQI
17AQI
17AQI
17AQI
18AQI
18AQI
20AQI
22AQI
23AQI
27AQI
25AQI
24AQI
26AQI
30AQI
34AQI
35AQI
31AQI
25AQI
26AQI
32AQI
29AQI
30AQI
26AQI
26AQI
24AQI
21AQI
23AQI
32AQI
48AQI
52AQI
35AQI
20AQI
23AQI
24AQI
23AQI
No. of days
202533AQI
Highest AQI recorded in
March52AQI
Lowest AQI recorded in
May20AQI
202427AQI
Highest AQI recorded in
May32AQI
Lowest AQI recorded in
February23AQI
202326AQI
Highest AQI recorded in
May33AQI
Lowest AQI recorded in
November19AQI
202225AQI
Highest AQI recorded in
May30AQI
Lowest AQI recorded in
December18AQI
202125AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
January18AQI
202025AQI
Highest AQI recorded in
April31AQI
Lowest AQI recorded in
December17AQI
Most & Least Polluted Years Over the Last 6 Years
Roskilde's annual 2025 AQI (33) shows an average percentage change of 27.6% (worsened AQI) compared to previous years: 2020 (25), 2021 (25), 2022 (25), 2023 (26), 2024 (27).