Hanover, Lower Saxony, Germany 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
Hanover, Lower Saxony, Germany
AQI Trends: Highest and Lowest
Same Day Analysis (15th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 16 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 15th Sep - 16th Sep 2025
Hanover, Lower Saxony, Germany
6 AM15th Sep 2025
8 PM
5 AM16th Sep 2025
18AQI
13AQI
18AQI
16AQI
In the last 24 hours,
Hanover's AQI reached its highest point of 18 at 11 AM during the Day, while the lowest point, 13, was recorded at 8 AM during the Day between 15th Sep and 16th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hanover, Lower Saxony, Germany
16°C11/22°C
19°C13/26°C
21°C15/28°C
17°C13/23°C
18°C13/24°C
15°C11/17°C
14°C10/18°C
14°C9/20°C
16°C9/23°C
20°C12/27°C
21°C17/28°C
20°C17/24°C
18°C15/23°C
18°C14/22°C
20°C14/26°C
18°C16/22°C
18°C14/23°C
20°C14/25°C
21°C17/27°C
18°C16/22°C
18°C12/24°C
19°C14/25°C
19°C13/25°C
19°C14/25°C
16°C13/21°C
16°C12/22°C
16°C12/20°C
15°C11/19°C
15°C12/20°C
18°C13/22°C
--°C/°C
25AQI
22AQI
26AQI
22AQI
2025 Days Vs Air Quality
Hanover, Lower Saxony, Germany
95%
105
5%
5
Total number of days with different AQI categories in last 259 days in 2025 (106 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 259 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
Hanover, Lower Saxony, Germany
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
17AQI
26AQI
30AQI
28AQI
38AQI
25AQI
37AQI
22AQI
16AQI
17AQI
16AQI
22AQI
52AQI
42AQI
38AQI
36AQI
37AQI
45AQI
31AQI
31AQI
37AQI
35AQI
26AQI
28AQI
27AQI
31AQI
25AQI
25AQI
26AQI
23AQI
26AQI
26AQI
25AQI
24AQI
30AQI
31AQI
24AQI
22AQI
22AQI
19AQI
19AQI
19AQI
23AQI
20AQI
21AQI
27AQI
29AQI
31AQI
23AQI
26AQI
33AQI
37AQI
36AQI
28AQI
21AQI
21AQI
25AQI
30AQI
26AQI
35AQI
27AQI
22AQI
19AQI
20AQI
23AQI
22AQI
21AQI
22AQI
23AQI
23AQI
25AQI
26AQI
32AQI
31AQI
29AQI
40AQI
52AQI
56AQI
60AQI
52AQI
36AQI
25AQI
25AQI
30AQI
24AQI
20AQI
19AQI
19AQI
19AQI
23AQI
33AQI
41AQI
33AQI
23AQI
22AQI
20AQI
20AQI
18AQI
20AQI
19AQI
19AQI
21AQI
22AQI
32AQI
36AQI
27AQI
19AQI
17AQI
18AQI
16AQI
24AQI
30AQI
25AQI
30AQI
22AQI
No. of days
202527AQI
Highest AQI recorded in
August30AQI
Lowest AQI recorded in
September22AQI
Most & Least Polluted Years Over the Last 1 Years
Hanover's annual 2025 AQI (27) shows an average percentage change of NaN% (improved AQI) compared to previous years: .