Elgseter, Trondheim, Sor Trondelag, 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
Elgseter, Trondheim, Sor Trondelag, Norway
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 15 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: 16th Sep - 17th Sep 2025
Elgseter, Trondheim, Sor Trondelag, Norway
6 AM16th Sep 2025
8 PM
5 AM17th Sep 2025
19AQI
12AQI
17AQI
13AQI
In the last 24 hours,
Elgseter's AQI reached its highest point of 19 at 10 AM during the Day, while the lowest point, 12, was recorded at 6 AM during the Day between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Elgseter, Trondheim, Sor Trondelag, Norway
13°C10/15°C
10°C9/11°C
10°C9/11°C
9°C8/10°C
9°C7/11°C
10°C7/11°C
10°C10/11°C
11°C8/13°C
11°C7/15°C
12°C9/15°C
14°C9/18°C
16°C12/20°C
15°C12/19°C
15°C11/20°C
16°C13/20°C
16°C13/19°C
14°C12/16°C
17°C13/21°C
15°C13/18°C
14°C12/16°C
14°C12/17°C
15°C12/20°C
15°C12/19°C
16°C12/20°C
16°C14/18°C
15°C13/18°C
13°C11/16°C
14°C10/18°C
14°C12/17°C
12°C10/14°C
--°C/°C
19AQI
17AQI
19AQI
17AQI
2025 Days Vs Air Quality
Elgseter, Trondheim, Sor Trondelag, Norway
98%
255
2%
4
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 260 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
Elgseter, Trondheim, Sor Trondelag, Norway
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
43AQI
24AQI
24AQI
24AQI
26AQI
36AQI
21AQI
41AQI
45AQI
33AQI
29AQI
23AQI
27AQI
25AQI
23AQI
25AQI
27AQI
31AQI
23AQI
28AQI
30AQI
27AQI
26AQI
30AQI
19AQI
20AQI
29AQI
30AQI
35AQI
31AQI
22AQI
31AQI
29AQI
22AQI
26AQI
22AQI
24AQI
34AQI
26AQI
21AQI
25AQI
33AQI
35AQI
26AQI
25AQI
36AQI
21AQI
24AQI
25AQI
32AQI
26AQI
24AQI
22AQI
23AQI
20AQI
32AQI
34AQI
30AQI
23AQI
24AQI
21AQI
20AQI
23AQI
21AQI
30AQI
28AQI
32AQI
25AQI
29AQI
35AQI
44AQI
37AQI
21AQI
16AQI
18AQI
17AQI
18AQI
21AQI
21AQI
36AQI
30AQI
24AQI
34AQI
22AQI
22AQI
21AQI
23AQI
23AQI
21AQI
31AQI
21AQI
39AQI
34AQI
21AQI
25AQI
21AQI
27AQI
28AQI
23AQI
15AQI
18AQI
21AQI
24AQI
30AQI
39AQI
29AQI
26AQI
20AQI
18AQI
14AQI
20AQI
21AQI
22AQI
43AQI
41AQI
39AQI
38AQI
32AQI
14AQI
18AQI
17AQI
16AQI
15AQI
17AQI
17AQI
21AQI
23AQI
20AQI
21AQI
19AQI
23AQI
32AQI
33AQI
23AQI
23AQI
18AQI
22AQI
20AQI
28AQI
23AQI
15AQI
13AQI
17AQI
17AQI
15AQI
17AQI
20AQI
17AQI
19AQI
19AQI
15AQI
20AQI
18AQI
16AQI
17AQI
23AQI
18AQI
17AQI
19AQI
16AQI
17AQI
19AQI
23AQI
26AQI
28AQI
35AQI
25AQI
26AQI
19AQI
18AQI
18AQI
14AQI
12AQI
20AQI
21AQI
21AQI
19AQI
21AQI
21AQI
19AQI
20AQI
23AQI
23AQI
22AQI
19AQI
19AQI
18AQI
18AQI
22AQI
23AQI
23AQI
21AQI
24AQI
36AQI
42AQI
54AQI
52AQI
51AQI
40AQI
46AQI
47AQI
44AQI
44AQI
48AQI
53AQI
41AQI
32AQI
26AQI
23AQI
26AQI
28AQI
47AQI
38AQI
27AQI
28AQI
24AQI
21AQI
19AQI
17AQI
18AQI
18AQI
19AQI
17AQI
18AQI
17AQI
29AQI
33AQI
16AQI
13AQI
17AQI
15AQI
13AQI
12AQI
13AQI
13AQI
13AQI
14AQI
16AQI
18AQI
23AQI
25AQI
24AQI
17AQI
18AQI
18AQI
17AQI
17AQI
20AQI
17AQI
20AQI
20AQI
23AQI
37AQI
32AQI
18AQI
15AQI
14AQI
14AQI
15AQI
28AQI
27AQI
25AQI
26AQI
20AQI
20AQI
33AQI
20AQI
20AQI
No. of days
202525AQI
Highest AQI recorded in
July33AQI
Lowest AQI recorded in
August20AQI
202424AQI
Highest AQI recorded in
May33AQI
Lowest AQI recorded in
July16AQI
202325AQI
Highest AQI recorded in
December38AQI
Lowest AQI recorded in
August12AQI
202225AQI
Highest AQI recorded in
December37AQI
Lowest AQI recorded in
July15AQI
202127AQI
Highest AQI recorded in
January59AQI
Lowest AQI recorded in
September15AQI
202020AQI
Highest AQI recorded in
June27AQI
Lowest AQI recorded in
July13AQI
Most & Least Polluted Years Over the Last 6 Years
Elgseter's annual 2025 AQI (25) shows an average percentage change of 2.5% (worsened AQI) compared to previous years: 2020 (20), 2021 (27), 2022 (25), 2023 (25), 2024 (24).