Oslo, Oslo, Norway 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
Oslo, Oslo, Norway
AQI Trends: Highest and Lowest
Same Day Analysis (29th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 31 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 29th Sep - 30th Sep 2026
Oslo, Oslo, Norway
6 AM29th Sep 2026
7 PM
5 AM30th Sep 2026
41AQI
23AQI
41AQI
21AQI
In the last 24 hours,
Oslo's AQI reached its highest point of 41 at 3 PM during the Day, while the lowest point, 21, was recorded at 12 AM during the Night between 29th Sep and 30th Sep 2026.
Day & Night AQI Trend : Sep 2026
Oslo, Oslo, Norway
14°C10/20°C
14°C9/19°C
12°C6/18°C
9°C8/11°C
11°C7/16°C
12°C7/18°C
13°C10/17°C
14°C9/18°C
10°C7/16°C
9°C4/16°C
10°C5/13°C
11°C8/14°C
12°C7/18°C
12°C9/15°C
12°C9/15°C
12°C8/17°C
11°C10/15°C
12°C9/16°C
11°C7/18°C
11°C6/16°C
11°C6/16°C
9°C5/14°C
10°C7/12°C
11°C9/12°C
10°C9/13°C
11°C8/16°C
10°C5/16°C
11°C8/13°C
11°C9/15°C
10°C8/13°C
29AQI
23AQI
27AQI
24AQI
2026 Days Vs Air Quality
Oslo, Oslo, Norway
96%
259
4%
10
Total number of days with different AQI categories in last 273 days in 2026 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2026, 96% of 273 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
Oslo, Oslo, Norway
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
42AQI (US)
14AQI (US)
14AQI (US)
17AQI (US)
17AQI (US)
22AQI (US)
47AQI (US)
42AQI (US)
37AQI (US)
36AQI (US)
63AQI (US)
52AQI (US)
23AQI (US)
19AQI (US)
41AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
28AQI (US)
40AQI (US)
22AQI (US)
26AQI (US)
48AQI (US)
53AQI (US)
50AQI (US)
47AQI (US)
12AQI (US)
12AQI (US)
41AQI (US)
39AQI (US)
27AQI (US)
32AQI (US)
22AQI (US)
42AQI (US)
41AQI (US)
36AQI (US)
51AQI (US)
11AQI (US)
13AQI (US)
45AQI (US)
39AQI (US)
41AQI (US)
24AQI (US)
35AQI (US)
57AQI (US)
57AQI (US)
18AQI (US)
28AQI (US)
51AQI (US)
53AQI (US)
42AQI (US)
29AQI (US)
30AQI (US)
25AQI (US)
20AQI (US)
27AQI (US)
30AQI (US)
29AQI (US)
31AQI (US)
26AQI (US)
37AQI (US)
36AQI (US)
28AQI (US)
35AQI (US)
50AQI (US)
59AQI (US)
44AQI (US)
38AQI (US)
45AQI (US)
25AQI (US)
21AQI (US)
33AQI (US)
34AQI (US)
25AQI (US)
31AQI (US)
29AQI (US)
41AQI (US)
34AQI (US)
33AQI (US)
23AQI (US)
28AQI (US)
40AQI (US)
37AQI (US)
21AQI (US)
31AQI (US)
36AQI (US)
26AQI (US)
25AQI (US)
16AQI (US)
26AQI (US)
29AQI (US)
21AQI (US)
16AQI (US)
19AQI (US)
28AQI (US)
18AQI (US)
29AQI (US)
36AQI (US)
35AQI (US)
22AQI (US)
29AQI (US)
30AQI (US)
33AQI (US)
29AQI (US)
33AQI (US)
32AQI (US)
29AQI (US)
27AQI (US)
23AQI (US)
25AQI (US)
23AQI (US)
18AQI (US)
25AQI (US)
11AQI (US)
20AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
25AQI (US)
24AQI (US)
19AQI (US)
25AQI (US)
13AQI (US)
21AQI (US)
14AQI (US)
20AQI (US)
20AQI (US)
15AQI (US)
21AQI (US)
20AQI (US)
12AQI (US)
21AQI (US)
36AQI (US)
40AQI (US)
35AQI (US)
33AQI (US)
32AQI (US)
34AQI (US)
32AQI (US)
38AQI (US)
51AQI (US)
41AQI (US)
33AQI (US)
18AQI (US)
19AQI (US)
25AQI (US)
28AQI (US)
22AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
20AQI (US)
22AQI (US)
21AQI (US)
18AQI (US)
20AQI (US)
21AQI (US)
18AQI (US)
18AQI (US)
16AQI (US)
23AQI (US)
25AQI (US)
20AQI (US)
22AQI (US)
25AQI (US)
7AQI (US)
12AQI (US)
21AQI (US)
20AQI (US)
16AQI (US)
23AQI (US)
26AQI (US)
25AQI (US)
23AQI (US)
16AQI (US)
23AQI (US)
21AQI (US)
16AQI (US)
18AQI (US)
15AQI (US)
11AQI (US)
13AQI (US)
14AQI (US)
22AQI (US)
27AQI (US)
27AQI (US)
17AQI (US)
19AQI (US)
28AQI (US)
29AQI (US)
44AQI (US)
42AQI (US)
31AQI (US)
19AQI (US)
21AQI (US)
25AQI (US)
26AQI (US)
19AQI (US)
27AQI (US)
17AQI (US)
15AQI (US)
22AQI (US)
19AQI (US)
28AQI (US)
39AQI (US)
30AQI (US)
17AQI (US)
15AQI (US)
20AQI (US)
28AQI (US)
29AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
29AQI (US)
28AQI (US)
29AQI (US)
18AQI (US)
19AQI (US)
22AQI (US)
29AQI (US)
30AQI (US)
27AQI (US)
23AQI (US)
16AQI (US)
32AQI (US)
34AQI (US)
29AQI (US)
30AQI (US)
28AQI (US)
25AQI (US)
24AQI (US)
27AQI (US)
25AQI (US)
29AQI (US)
25AQI (US)
25AQI (US)
19AQI (US)
28AQI (US)
27AQI (US)
29AQI (US)
22AQI (US)
18AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
27AQI (US)
29AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
34AQI (US)
26AQI (US)
24AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
34AQI (US)
31AQI (US)
32AQI (US)
34AQI (US)
33AQI (US)
25AQI (US)
26AQI (US)
21AQI (US)
23AQI (US)
25AQI (US)
26AQI (US)
No. of days
202627AQI (US)
Highest AQI (US) recorded in
February34AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
November47AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
January52AQI (US)
Lowest AQI (US) recorded in
July20AQI (US)
202328AQI (US)
Highest AQI (US) recorded in
December40AQI (US)
Lowest AQI (US) recorded in
October17AQI (US)
202231AQI (US)
Highest AQI (US) recorded in
March52AQI (US)
Lowest AQI (US) recorded in
July20AQI (US)
202131AQI (US)
Highest AQI (US) recorded in
December45AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202025AQI (US)
Highest AQI (US) recorded in
March42AQI (US)
Lowest AQI (US) recorded in
July15AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Oslo's annual 2026 AQI (US) (27) shows an average percentage change of -9.9% (improved AQI (US)) compared to previous years: 2020 (25), 2021 (31), 2022 (31), 2023 (28), 2024 (32), 2025 (35).