Tonsberg, Vestfold, 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
Tonsberg, Vestfold, Norway
AQI Trends: Highest and Lowest
Same Day Analysis (25th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 25 of Good air quality, showing improvement over 2023 on the same day.
Day & Night AQI Trend: 24th Sep - 25th Sep 2026
Tonsberg, Vestfold, Norway
6 AM24th Sep 2026
7 PM
5 AM25th Sep 2026
25AQI
21AQI
27AQI
21AQI
In the last 24 hours,
Tonsberg's AQI reached its highest point of 27 at 3 AM during the Night, while the lowest point, 21, was recorded at 12 AM during the Night between 24th Sep and 25th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Tonsberg, Vestfold, Norway
17°C16/19°C
16°C15/19°C
16°C15/18°C
16°C16/18°C
16°C14/17°C
15°C13/17°C
16°C12/19°C
13°C11/15°C
13°C12/15°C
13°C11/16°C
14°C12/16°C
16°C13/17°C
15°C14/16°C
13°C12/16°C
13°C10/16°C
14°C12/16°C
13°C12/15°C
14°C11/17°C
14°C12/15°C
15°C13/16°C
15°C12/18°C
14°C13/15°C
14°C12/17°C
15°C13/17°C
14°C12/16°C
14°C12/17°C
12°C10/14°C
13°C12/14°C
14°C13/14°C
14°C13/16°C
28AQI
23AQI
26AQI
22AQI
2026 Days Vs Air Quality
Tonsberg, Vestfold, Norway
96%
255
4%
10
Total number of days with different AQI categories in last 269 days in 2026 (96 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2026, 96% of 269 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
Tonsberg, Vestfold, Norway
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI (US)
8AQI (US)
12AQI (US)
13AQI (US)
17AQI (US)
17AQI (US)
20AQI (US)
40AQI (US)
25AQI (US)
16AQI (US)
37AQI (US)
25AQI (US)
22AQI (US)
20AQI (US)
43AQI (US)
34AQI (US)
17AQI (US)
21AQI (US)
32AQI (US)
48AQI (US)
27AQI (US)
32AQI (US)
48AQI (US)
52AQI (US)
43AQI (US)
24AQI (US)
21AQI (US)
10AQI (US)
40AQI (US)
44AQI (US)
56AQI (US)
30AQI (US)
16AQI (US)
40AQI (US)
43AQI (US)
44AQI (US)
47AQI (US)
38AQI (US)
18AQI (US)
24AQI (US)
44AQI (US)
39AQI (US)
15AQI (US)
20AQI (US)
46AQI (US)
33AQI (US)
18AQI (US)
32AQI (US)
53AQI (US)
56AQI (US)
35AQI (US)
29AQI (US)
45AQI (US)
36AQI (US)
25AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
27AQI (US)
22AQI (US)
33AQI (US)
34AQI (US)
29AQI (US)
33AQI (US)
53AQI (US)
69AQI (US)
57AQI (US)
29AQI (US)
38AQI (US)
25AQI (US)
23AQI (US)
33AQI (US)
34AQI (US)
19AQI (US)
31AQI (US)
31AQI (US)
39AQI (US)
36AQI (US)
34AQI (US)
23AQI (US)
38AQI (US)
37AQI (US)
44AQI (US)
13AQI (US)
20AQI (US)
28AQI (US)
30AQI (US)
23AQI (US)
16AQI (US)
22AQI (US)
30AQI (US)
22AQI (US)
14AQI (US)
19AQI (US)
29AQI (US)
15AQI (US)
23AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
30AQI (US)
33AQI (US)
36AQI (US)
26AQI (US)
25AQI (US)
31AQI (US)
45AQI (US)
20AQI (US)
11AQI (US)
22AQI (US)
21AQI (US)
13AQI (US)
12AQI (US)
8AQI (US)
24AQI (US)
22AQI (US)
20AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
19AQI (US)
27AQI (US)
9AQI (US)
12AQI (US)
10AQI (US)
17AQI (US)
12AQI (US)
24AQI (US)
19AQI (US)
24AQI (US)
12AQI (US)
27AQI (US)
36AQI (US)
40AQI (US)
35AQI (US)
34AQI (US)
31AQI (US)
34AQI (US)
31AQI (US)
38AQI (US)
51AQI (US)
42AQI (US)
33AQI (US)
11AQI (US)
14AQI (US)
22AQI (US)
39AQI (US)
25AQI (US)
30AQI (US)
24AQI (US)
29AQI (US)
23AQI (US)
23AQI (US)
20AQI (US)
18AQI (US)
29AQI (US)
24AQI (US)
14AQI (US)
21AQI (US)
20AQI (US)
16AQI (US)
18AQI (US)
15AQI (US)
22AQI (US)
33AQI (US)
18AQI (US)
22AQI (US)
56AQI (US)
8AQI (US)
10AQI (US)
23AQI (US)
24AQI (US)
25AQI (US)
34AQI (US)
27AQI (US)
37AQI (US)
41AQI (US)
19AQI (US)
25AQI (US)
21AQI (US)
15AQI (US)
18AQI (US)
12AQI (US)
8AQI (US)
14AQI (US)
11AQI (US)
23AQI (US)
28AQI (US)
27AQI (US)
22AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
28AQI (US)
33AQI (US)
29AQI (US)
26AQI (US)
18AQI (US)
21AQI (US)
30AQI (US)
20AQI (US)
26AQI (US)
19AQI (US)
18AQI (US)
19AQI (US)
20AQI (US)
28AQI (US)
52AQI (US)
33AQI (US)
21AQI (US)
17AQI (US)
18AQI (US)
28AQI (US)
28AQI (US)
29AQI (US)
26AQI (US)
23AQI (US)
26AQI (US)
26AQI (US)
20AQI (US)
26AQI (US)
35AQI (US)
29AQI (US)
40AQI (US)
24AQI (US)
15AQI (US)
20AQI (US)
27AQI (US)
29AQI (US)
28AQI (US)
28AQI (US)
16AQI (US)
19AQI (US)
36AQI (US)
32AQI (US)
26AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
31AQI (US)
30AQI (US)
27AQI (US)
24AQI (US)
18AQI (US)
17AQI (US)
29AQI (US)
30AQI (US)
23AQI (US)
15AQI (US)
25AQI (US)
27AQI (US)
24AQI (US)
28AQI (US)
31AQI (US)
26AQI (US)
21AQI (US)
23AQI (US)
28AQI (US)
26AQI (US)
16AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
25AQI (US)
29AQI (US)
33AQI (US)
32AQI (US)
23AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
25AQI (US)
No. of days
202627AQI (US)
Highest AQI (US) recorded in
February33AQI (US)
Lowest AQI (US) recorded in
July23AQI (US)
202531AQI (US)
Highest AQI (US) recorded in
February44AQI (US)
Lowest AQI (US) recorded in
May19AQI (US)
202426AQI (US)
Highest AQI (US) recorded in
January38AQI (US)
Lowest AQI (US) recorded in
July14AQI (US)
202325AQI (US)
Highest AQI (US) recorded in
February37AQI (US)
Lowest AQI (US) recorded in
October13AQI (US)
202228AQI (US)
Highest AQI (US) recorded in
March54AQI (US)
Lowest AQI (US) recorded in
August9AQI (US)
202128AQI (US)
Highest AQI (US) recorded in
February45AQI (US)
Lowest AQI (US) recorded in
April18AQI (US)
202024AQI (US)
Highest AQI (US) recorded in
March41AQI (US)
Lowest AQI (US) recorded in
July14AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Tonsberg's annual 2026 AQI (US) (27) shows an average percentage change of 0.7% (worsened AQI (US)) compared to previous years: 2020 (24), 2021 (28), 2022 (28), 2023 (25), 2024 (26), 2025 (31).