Bratislava, Bratislava Region, Slovakia 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
Bratislava, Bratislava Region, Slovakia
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Bratislava, Bratislava Region, Slovakia
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
55AQI
39AQI
32AQI
22AQI
In the last 24 hours,
Bratislava's AQI reached its highest point of 55 at 3 PM during the Day, while the lowest point, 22, was recorded at 4 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Bratislava, Bratislava Region, Slovakia
17°C15/21°C
20°C14/27°C
20°C16/25°C
20°C16/26°C
22°C16/28°C
20°C15/24°C
18°C14/24°C
18°C11/25°C
19°C14/25°C
20°C14/26°C
18°C17/21°C
19°C15/24°C
18°C15/21°C
19°C15/24°C
16°C13/19°C
18°C12/26°C
16°C13/17°C
15°C11/20°C
16°C11/22°C
20°C14/27°C
21°C15/29°C
22°C16/30°C
22°C15/29°C
15°C12/19°C
13°C12/14°C
12°C11/13°C
13°C12/17°C
14°C11/20°C
14°C9/18°C
11°C6/17°C
--°C/°C
33AQI
28AQI
31AQI
27AQI
2025 Days Vs Air Quality
Bratislava, Bratislava Region, Slovakia
92%
114
8%
10
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 273 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
Bratislava, Bratislava Region, Slovakia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
27AQI
51AQI
48AQI
49AQI
36AQI
49AQI
45AQI
39AQI
53AQI
21AQI
31AQI
39AQI
49AQI
45AQI
46AQI
42AQI
47AQI
48AQI
42AQI
43AQI
48AQI
46AQI
44AQI
46AQI
49AQI
47AQI
47AQI
46AQI
42AQI
35AQI
36AQI
37AQI
36AQI
39AQI
44AQI
44AQI
43AQI
45AQI
43AQI
36AQI
31AQI
26AQI
25AQI
24AQI
30AQI
35AQI
33AQI
38AQI
31AQI
26AQI
28AQI
33AQI
46AQI
38AQI
31AQI
38AQI
39AQI
45AQI
49AQI
39AQI
35AQI
29AQI
27AQI
25AQI
26AQI
24AQI
23AQI
24AQI
23AQI
28AQI
38AQI
50AQI
55AQI
54AQI
45AQI
46AQI
53AQI
56AQI
58AQI
55AQI
36AQI
34AQI
38AQI
46AQI
41AQI
29AQI
20AQI
18AQI
27AQI
33AQI
41AQI
45AQI
33AQI
26AQI
29AQI
31AQI
26AQI
37AQI
30AQI
21AQI
22AQI
30AQI
36AQI
38AQI
29AQI
26AQI
31AQI
29AQI
23AQI
25AQI
20AQI
23AQI
31AQI
42AQI
46AQI
44AQI
42AQI
38AQI
41AQI
49AQI
39AQI
56AQI
60AQI
33AQI
43AQI
36AQI
37AQI
34AQI
No. of days
202537AQI
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
May33AQI
Most & Least Polluted Years Over the Last 1 Years
Bratislava's annual 2025 AQI (37) shows an average percentage change of NaN% (improved AQI) compared to previous years: .