Sundsvall, Vasternorrland, Sweden 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
Sundsvall, Vasternorrland, Sweden
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 46 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Sundsvall, Vasternorrland, Sweden
3 AM2nd Aug 2025
10 PM
2 AM3rd Aug 2025
AQI
AQI
52AQI
26AQI
In the last 24 hours,
Sundsvall's AQI reached its highest point of 52 at 6 AM during the Night, while the lowest point, undefined, was recorded at 2 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sundsvall, Vasternorrland, Sweden
14°C9/18°C
13°C8/16°C
11°C10/11°C
12°C8/17°C
15°C8/22°C
15°C9/22°C
16°C10/21°C
18°C11/23°C
19°C11/25°C
21°C14/26°C
21°C16/26°C
22°C15/27°C
21°C15/27°C
20°C15/25°C
19°C14/24°C
20°C14/27°C
20°C13/25°C
20°C15/24°C
22°C17/26°C
22°C16/26°C
23°C17/29°C
22°C16/27°C
20°C16/25°C
19°C14/23°C
19°C14/24°C
16°C15/17°C
18°C14/22°C
18°C14/22°C
19°C15/25°C
--°C/°C
--°C/°C
34AQI
34AQI
34AQI
34AQI
2025 Days Vs Air Quality
Sundsvall, Vasternorrland, Sweden
97%
206
3%
7
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 214 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
Sundsvall, Vasternorrland, Sweden
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
22AQI
22AQI
20AQI
20AQI
22AQI
20AQI
23AQI
25AQI
23AQI
20AQI
22AQI
23AQI
21AQI
22AQI
21AQI
21AQI
25AQI
23AQI
20AQI
21AQI
22AQI
23AQI
24AQI
26AQI
24AQI
28AQI
23AQI
22AQI
21AQI
20AQI
19AQI
20AQI
20AQI
23AQI
29AQI
21AQI
23AQI
36AQI
33AQI
23AQI
23AQI
22AQI
20AQI
21AQI
24AQI
19AQI
24AQI
21AQI
22AQI
36AQI
23AQI
45AQI
48AQI
36AQI
33AQI
35AQI
49AQI
27AQI
32AQI
23AQI
23AQI
28AQI
24AQI
22AQI
39AQI
43AQI
38AQI
24AQI
30AQI
29AQI
51AQI
52AQI
28AQI
27AQI
19AQI
13AQI
20AQI
34AQI
37AQI
29AQI
34AQI
45AQI
44AQI
42AQI
36AQI
31AQI
24AQI
32AQI
36AQI
37AQI
39AQI
51AQI
31AQI
25AQI
17AQI
18AQI
26AQI
33AQI
15AQI
23AQI
22AQI
25AQI
27AQI
23AQI
27AQI
42AQI
28AQI
17AQI
14AQI
14AQI
14AQI
17AQI
17AQI
17AQI
14AQI
14AQI
23AQI
12AQI
17AQI
30AQI
18AQI
14AQI
14AQI
16AQI
16AQI
22AQI
24AQI
16AQI
17AQI
19AQI
34AQI
29AQI
20AQI
15AQI
15AQI
14AQI
14AQI
21AQI
16AQI
14AQI
18AQI
14AQI
16AQI
20AQI
24AQI
20AQI
16AQI
19AQI
19AQI
14AQI
13AQI
21AQI
17AQI
24AQI
24AQI
19AQI
16AQI
16AQI
21AQI
16AQI
20AQI
20AQI
22AQI
25AQI
35AQI
30AQI
24AQI
21AQI
18AQI
16AQI
14AQI
11AQI
16AQI
16AQI
16AQI
19AQI
22AQI
17AQI
17AQI
15AQI
18AQI
21AQI
18AQI
16AQI
18AQI
18AQI
17AQI
18AQI
19AQI
22AQI
23AQI
28AQI
31AQI
35AQI
32AQI
38AQI
30AQI
25AQI
33AQI
41AQI
42AQI
47AQI
52AQI
57AQI
56AQI
52AQI
39AQI
39AQI
34AQI
25AQI
36AQI
46AQI
22AQI
28AQI
32AQI
23AQI
19AQI
19AQI
32AQI
46AQI
No. of days
202525AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
May19AQI
202425AQI
Highest AQI recorded in
March36AQI
Lowest AQI recorded in
January13AQI
202323AQI
Highest AQI recorded in
May41AQI
Lowest AQI recorded in
November10AQI
202223AQI
Highest AQI recorded in
March46AQI
Lowest AQI recorded in
August8AQI
202124AQI
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
January14AQI
202021AQI
Highest AQI recorded in
June35AQI
Lowest AQI recorded in
October14AQI
Most & Least Polluted Years Over the Last 6 Years
Sundsvall's annual 2025 AQI (25) shows an average percentage change of 9.9% (worsened AQI) compared to previous years: 2020 (21), 2021 (24), 2022 (23), 2023 (23), 2024 (25).