Riehen, Basel Stadt, Switzerland 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
Riehen, Basel Stadt, Switzerland
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Riehen, Basel Stadt, Switzerland
5 AM2nd Jul 2025
9 PM
4 AM3rd Jul 2025
52AQI
48AQI
49AQI
43AQI
In the last 24 hours,
Riehen's AQI reached its highest point of 52 at 5 AM during the Day, while the lowest point, 43, was recorded at 4 AM during the Night between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Riehen, Basel Stadt, Switzerland
17°C13/23°C
16°C14/20°C
16°C11/20°C
17°C13/22°C
16°C13/18°C
15°C10/19°C
15°C8/21°C
17°C10/24°C
19°C13/24°C
22°C13/31°C
25°C18/32°C
25°C19/30°C
20°C15/26°C
17°C13/21°C
18°C11/26°C
20°C13/27°C
22°C16/28°C
21°C15/28°C
22°C15/29°C
24°C16/32°C
23°C17/28°C
22°C15/29°C
25°C16/33°C
22°C18/26°C
22°C17/29°C
24°C17/31°C
25°C18/32°C
25°C19/34°C
23°C18/34°C
25°C19/35°C
0°C0/0°C
39AQI
39AQI
38AQI
38AQI
2025 Days Vs Air Quality
Riehen, Basel Stadt, Switzerland
68%
124
32%
58
0.5%
1
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 68%
Health Risk Level:
Moderate
In 2025, 68% of 184 days were within WHO’s safe air quality limits, and 32% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Riehen, Basel Stadt, Switzerland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
101AQI
57AQI
37AQI
49AQI
42AQI
36AQI
25AQI
27AQI
24AQI
24AQI
48AQI
65AQI
55AQI
61AQI
81AQI
77AQI
62AQI
64AQI
76AQI
87AQI
78AQI
64AQI
47AQI
37AQI
33AQI
28AQI
24AQI
22AQI
26AQI
31AQI
32AQI
51AQI
57AQI
60AQI
66AQI
75AQI
81AQI
63AQI
79AQI
77AQI
74AQI
87AQI
54AQI
47AQI
62AQI
71AQI
79AQI
75AQI
71AQI
79AQI
92AQI
73AQI
58AQI
44AQI
40AQI
42AQI
26AQI
27AQI
31AQI
48AQI
52AQI
55AQI
62AQI
67AQI
58AQI
56AQI
59AQI
72AQI
68AQI
36AQI
37AQI
57AQI
44AQI
59AQI
60AQI
63AQI
45AQI
49AQI
45AQI
44AQI
48AQI
29AQI
21AQI
29AQI
56AQI
56AQI
37AQI
60AQI
58AQI
33AQI
28AQI
34AQI
41AQI
45AQI
41AQI
33AQI
21AQI
30AQI
33AQI
38AQI
51AQI
42AQI
36AQI
28AQI
24AQI
21AQI
16AQI
17AQI
19AQI
26AQI
16AQI
16AQI
19AQI
16AQI
21AQI
30AQI
43AQI
35AQI
34AQI
39AQI
41AQI
38AQI
42AQI
35AQI
26AQI
20AQI
26AQI
36AQI
44AQI
34AQI
31AQI
22AQI
21AQI
33AQI
38AQI
27AQI
25AQI
33AQI
33AQI
32AQI
34AQI
29AQI
29AQI
26AQI
23AQI
22AQI
24AQI
22AQI
18AQI
23AQI
28AQI
29AQI
32AQI
26AQI
27AQI
21AQI
19AQI
17AQI
25AQI
38AQI
55AQI
65AQI
58AQI
65AQI
63AQI
59AQI
35AQI
37AQI
38AQI
47AQI
52AQI
43AQI
41AQI
45AQI
35AQI
29AQI
32AQI
28AQI
24AQI
25AQI
29AQI
36AQI
48AQI
49AQI
62AQI
50AQI
30AQI
30AQI
38AQI
42AQI
No. of days
202543AQI
Highest AQI recorded in
February62AQI
Lowest AQI recorded in
May30AQI
202434AQI
Highest AQI recorded in
January52AQI
Lowest AQI recorded in
October24AQI
202337AQI
Highest AQI recorded in
February55AQI
Lowest AQI recorded in
November24AQI
202241AQI
Highest AQI recorded in
March72AQI
Lowest AQI recorded in
September24AQI
202140AQI
Highest AQI recorded in
February55AQI
Lowest AQI recorded in
August30AQI
202039AQI
Highest AQI recorded in
March56AQI
Lowest AQI recorded in
October29AQI
Most & Least Polluted Years Over the Last 6 Years
Riehen's annual 2025 AQI (43) shows an average percentage change of 12.6% (worsened AQI) compared to previous years: 2020 (39), 2021 (40), 2022 (41), 2023 (37), 2024 (34).