Harstad, Troms, Norway Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Harstad, Troms, Norway
AQI Trends: Highest and Lowest
Same Day Analysis (1st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 18 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 2nd Jul 2025
Harstad, Troms, Norway
12 AM2nd Jul 2025
12 AM
11 PM2nd Jul 2025
20AQI
20AQI
30AQI
15AQI
In the last 24 hours,
Harstad's AQI reached its highest point of 30 at 6 AM during the Night, while the lowest point, 15, was recorded at 12 PM during the Night between 2nd Jul and 2nd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Harstad, Troms, Norway
8°C8/8°C
9°C8/11°C
8°C8/9°C
9°C8/9°C
9°C8/10°C
8°C7/8°C
8°C8/9°C
8°C5/9°C
7°C5/9°C
6°C4/8°C
9°C5/12°C
10°C7/11°C
8°C7/10°C
12°C9/16°C
10°C9/10°C
9°C8/10°C
6°C4/7°C
6°C4/7°C
7°C5/9°C
8°C5/10°C
11°C7/13°C
12°C9/14°C
9°C7/11°C
9°C7/10°C
13°C8/16°C
12°C11/13°C
12°C11/13°C
11°C8/12°C
11°C7/16°C
10°C8/12°C
0°C0/0°C
21AQI
21AQI
19AQI
19AQI
2025 Days Vs Air Quality
Harstad, Troms, Norway
100%
182
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 184 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
Harstad, Troms, Norway
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
38AQI
28AQI
30AQI
43AQI
43AQI
32AQI
25AQI
30AQI
25AQI
26AQI
26AQI
26AQI
31AQI
28AQI
25AQI
25AQI
26AQI
30AQI
27AQI
26AQI
39AQI
28AQI
37AQI
29AQI
30AQI
30AQI
25AQI
28AQI
30AQI
25AQI
25AQI
25AQI
28AQI
25AQI
25AQI
26AQI
27AQI
30AQI
25AQI
26AQI
26AQI
29AQI
26AQI
26AQI
26AQI
26AQI
27AQI
26AQI
30AQI
26AQI
26AQI
26AQI
26AQI
25AQI
29AQI
42AQI
27AQI
27AQI
27AQI
26AQI
30AQI
27AQI
26AQI
26AQI
28AQI
26AQI
26AQI
32AQI
33AQI
35AQI
29AQI
22AQI
18AQI
20AQI
18AQI
20AQI
20AQI
20AQI
18AQI
16AQI
27AQI
26AQI
20AQI
29AQI
29AQI
22AQI
20AQI
34AQI
27AQI
32AQI
40AQI
31AQI
28AQI
21AQI
27AQI
48AQI
21AQI
19AQI
15AQI
17AQI
17AQI
14AQI
16AQI
14AQI
21AQI
20AQI
15AQI
21AQI
17AQI
16AQI
31AQI
26AQI
36AQI
19AQI
31AQI
24AQI
15AQI
25AQI
45AQI
17AQI
23AQI
19AQI
28AQI
24AQI
31AQI
38AQI
26AQI
18AQI
18AQI
20AQI
27AQI
21AQI
21AQI
19AQI
18AQI
17AQI
18AQI
22AQI
18AQI
15AQI
26AQI
20AQI
26AQI
18AQI
21AQI
19AQI
17AQI
19AQI
20AQI
18AQI
16AQI
14AQI
16AQI
19AQI
22AQI
18AQI
17AQI
16AQI
16AQI
17AQI
20AQI
19AQI
20AQI
26AQI
23AQI
23AQI
28AQI
21AQI
21AQI
17AQI
16AQI
16AQI
17AQI
21AQI
27AQI
19AQI
20AQI
19AQI
18AQI
19AQI
18AQI
30AQI
27AQI
25AQI
24AQI
21AQI
19AQI
18AQI
No. of days
202524AQI
Highest AQI recorded in
January30AQI
Lowest AQI recorded in
July18AQI
202422AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
October13AQI
202322AQI
Highest AQI recorded in
April34AQI
Lowest AQI recorded in
September13AQI
202222AQI
Highest AQI recorded in
November29AQI
Lowest AQI recorded in
August14AQI
202120AQI
Highest AQI recorded in
December33AQI
Lowest AQI recorded in
September12AQI
202017AQI
Highest AQI recorded in
October29AQI
Lowest AQI recorded in
March9AQI
Most & Least Polluted Years Over the Last 6 Years
Harstad's annual 2025 AQI (24) shows an average percentage change of 20.2% (worsened AQI) compared to previous years: 2020 (17), 2021 (20), 2022 (22), 2023 (22), 2024 (22).