StCroix, Sarpsborg, Ostfold, Norway Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
StCroix, Sarpsborg, Ostfold, Norway
AQI Trends: Highest and Lowest
Same Day Analysis (1st October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 47 of Good air quality on the same day.
Day & Night AQI Trend: 30th Sep - 1st Oct 2026
StCroix, Sarpsborg, Ostfold, Norway
6 AM30th Sep 2026
7 PM
5 AM1st Oct 2026
36AQI
21AQI
49AQI
25AQI
In the last 24 hours,
StCroix's AQI reached its highest point of 49 at 5 AM during the Night, while the lowest point, 21, was recorded at 4 PM during the Day between 30th Sep and 1st Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
StCroix, Sarpsborg, Ostfold, Norway
16°C12/19°C
13°C10/16°C
12°C9/15°C
11°C8/16°C
14°C10/18°C
16°C13/18°C
15°C14/16°C
14°C9/18°C
12°C7/17°C
13°C12/15°C
13°C12/15°C
14°C11/19°C
13°C11/15°C
14°C12/16°C
15°C12/18°C
13°C12/15°C
13°C12/16°C
14°C12/16°C
13°C12/16°C
13°C10/17°C
11°C7/14°C
12°C9/15°C
13°C12/14°C
14°C12/15°C
13°C11/17°C
13°C11/15°C
14°C13/15°C
13°C10/16°C
14°C12/16°C
14°C11/19°C
27AQI
22AQI
25AQI
23AQI
2026 Days Vs Air Quality
StCroix, Sarpsborg, Ostfold, Norway
94%
254
6%
17
Total number of days with different AQI categories in last 274 days in 2026 (91 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 274 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
StCroix, Sarpsborg, Ostfold, Norway
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI (US)
14AQI (US)
13AQI (US)
19AQI (US)
20AQI (US)
24AQI (US)
35AQI (US)
58AQI (US)
41AQI (US)
31AQI (US)
93AQI (US)
56AQI (US)
31AQI (US)
29AQI (US)
79AQI (US)
29AQI (US)
42AQI (US)
34AQI (US)
41AQI (US)
52AQI (US)
30AQI (US)
28AQI (US)
46AQI (US)
51AQI (US)
49AQI (US)
41AQI (US)
35AQI (US)
37AQI (US)
37AQI (US)
46AQI (US)
46AQI (US)
28AQI (US)
17AQI (US)
43AQI (US)
40AQI (US)
46AQI (US)
48AQI (US)
11AQI (US)
15AQI (US)
43AQI (US)
47AQI (US)
32AQI (US)
14AQI (US)
31AQI (US)
53AQI (US)
44AQI (US)
19AQI (US)
33AQI (US)
61AQI (US)
72AQI (US)
26AQI (US)
39AQI (US)
60AQI (US)
28AQI (US)
18AQI (US)
23AQI (US)
31AQI (US)
29AQI (US)
28AQI (US)
26AQI (US)
35AQI (US)
34AQI (US)
30AQI (US)
40AQI (US)
65AQI (US)
74AQI (US)
66AQI (US)
31AQI (US)
58AQI (US)
43AQI (US)
25AQI (US)
33AQI (US)
33AQI (US)
17AQI (US)
35AQI (US)
30AQI (US)
41AQI (US)
34AQI (US)
39AQI (US)
21AQI (US)
45AQI (US)
49AQI (US)
48AQI (US)
16AQI (US)
27AQI (US)
29AQI (US)
25AQI (US)
25AQI (US)
14AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
17AQI (US)
21AQI (US)
29AQI (US)
16AQI (US)
26AQI (US)
34AQI (US)
29AQI (US)
23AQI (US)
29AQI (US)
31AQI (US)
34AQI (US)
29AQI (US)
32AQI (US)
32AQI (US)
41AQI (US)
18AQI (US)
13AQI (US)
22AQI (US)
24AQI (US)
15AQI (US)
19AQI (US)
7AQI (US)
21AQI (US)
21AQI (US)
20AQI (US)
23AQI (US)
26AQI (US)
24AQI (US)
20AQI (US)
26AQI (US)
10AQI (US)
11AQI (US)
13AQI (US)
21AQI (US)
17AQI (US)
17AQI (US)
18AQI (US)
21AQI (US)
12AQI (US)
27AQI (US)
37AQI (US)
40AQI (US)
35AQI (US)
33AQI (US)
32AQI (US)
34AQI (US)
34AQI (US)
38AQI (US)
51AQI (US)
42AQI (US)
33AQI (US)
17AQI (US)
16AQI (US)
21AQI (US)
33AQI (US)
25AQI (US)
29AQI (US)
26AQI (US)
27AQI (US)
22AQI (US)
23AQI (US)
21AQI (US)
20AQI (US)
28AQI (US)
25AQI (US)
15AQI (US)
18AQI (US)
18AQI (US)
16AQI (US)
17AQI (US)
13AQI (US)
24AQI (US)
32AQI (US)
18AQI (US)
22AQI (US)
58AQI (US)
9AQI (US)
10AQI (US)
23AQI (US)
25AQI (US)
25AQI (US)
34AQI (US)
27AQI (US)
38AQI (US)
40AQI (US)
20AQI (US)
24AQI (US)
19AQI (US)
17AQI (US)
16AQI (US)
13AQI (US)
7AQI (US)
13AQI (US)
12AQI (US)
20AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
34AQI (US)
34AQI (US)
18AQI (US)
25AQI (US)
27AQI (US)
24AQI (US)
13AQI (US)
29AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
20AQI (US)
37AQI (US)
56AQI (US)
32AQI (US)
19AQI (US)
22AQI (US)
24AQI (US)
26AQI (US)
35AQI (US)
30AQI (US)
29AQI (US)
24AQI (US)
26AQI (US)
29AQI (US)
23AQI (US)
27AQI (US)
39AQI (US)
33AQI (US)
50AQI (US)
14AQI (US)
20AQI (US)
26AQI (US)
30AQI (US)
35AQI (US)
28AQI (US)
19AQI (US)
18AQI (US)
26AQI (US)
34AQI (US)
31AQI (US)
26AQI (US)
31AQI (US)
26AQI (US)
22AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
32AQI (US)
25AQI (US)
19AQI (US)
17AQI (US)
28AQI (US)
30AQI (US)
20AQI (US)
15AQI (US)
22AQI (US)
27AQI (US)
22AQI (US)
28AQI (US)
28AQI (US)
27AQI (US)
19AQI (US)
21AQI (US)
24AQI (US)
22AQI (US)
15AQI (US)
19AQI (US)
24AQI (US)
19AQI (US)
19AQI (US)
23AQI (US)
25AQI (US)
31AQI (US)
24AQI (US)
28AQI (US)
47AQI (US)
39AQI (US)
35AQI (US)
36AQI (US)
24AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
24AQI (US)
47AQI (US)
No. of days
202629AQI (US)
Highest AQI (US) recorded in
October47AQI (US)
Lowest AQI (US) recorded in
September24AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
December53AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202435AQI (US)
Highest AQI (US) recorded in
January80AQI (US)
Lowest AQI (US) recorded in
July19AQI (US)
202333AQI (US)
Highest AQI (US) recorded in
December52AQI (US)
Lowest AQI (US) recorded in
October18AQI (US)
202235AQI (US)
Highest AQI (US) recorded in
March63AQI (US)
Lowest AQI (US) recorded in
August13AQI (US)
202138AQI (US)
Highest AQI (US) recorded in
December66AQI (US)
Lowest AQI (US) recorded in
April21AQI (US)
202020AQI (US)
Highest AQI (US) recorded in
October39AQI (US)
Lowest AQI (US) recorded in
September11AQI (US)
Most & Least Polluted Years Over the Last 7 Years
StCroix's annual 2026 AQI (US) (29) shows an average percentage change of -7.03% (improved AQI (US)) compared to previous years: 2020 (20), 2021 (38), 2022 (35), 2023 (33), 2024 (35), 2025 (35).