Trnava, Trnavsky kraj, 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
Trnava, Trnavsky kraj, Slovakia
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 29 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Trnava, Trnavsky kraj, Slovakia
6 AM19th Sep 2025
7 PM
5 AM20th Sep 2025
47AQI
23AQI
34AQI
28AQI
In the last 24 hours,
Trnava's AQI reached its highest point of 47 at 12 PM during the Day, while the lowest point, 23, was recorded at 6 AM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Trnava, Trnavsky kraj, Slovakia
19°C17/23°C
19°C14/24°C
16°C11/20°C
15°C8/21°C
17°C11/23°C
18°C12/26°C
21°C13/29°C
25°C16/33°C
25°C18/33°C
20°C17/26°C
18°C15/21°C
20°C14/27°C
20°C16/27°C
21°C16/26°C
22°C16/28°C
20°C16/25°C
18°C14/23°C
18°C11/25°C
19°C13/26°C
20°C13/26°C
18°C17/21°C
19°C16/24°C
18°C14/23°C
19°C15/25°C
16°C12/19°C
17°C11/25°C
15°C13/16°C
15°C10/20°C
15°C10/21°C
19°C13/27°C
--°C/°C
33AQI
25AQI
31AQI
25AQI
2025 Days Vs Air Quality
Trnava, Trnavsky kraj, Slovakia
92%
105
8%
9
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 263 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
Trnava, Trnavsky kraj, Slovakia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI
23AQI
42AQI
45AQI
46AQI
34AQI
48AQI
45AQI
44AQI
58AQI
20AQI
22AQI
30AQI
52AQI
44AQI
45AQI
43AQI
50AQI
47AQI
34AQI
40AQI
46AQI
43AQI
34AQI
31AQI
41AQI
41AQI
41AQI
41AQI
38AQI
31AQI
34AQI
35AQI
32AQI
38AQI
36AQI
41AQI
40AQI
45AQI
43AQI
39AQI
33AQI
26AQI
24AQI
28AQI
38AQI
45AQI
42AQI
41AQI
32AQI
28AQI
28AQI
38AQI
50AQI
36AQI
27AQI
38AQI
41AQI
46AQI
44AQI
38AQI
34AQI
29AQI
26AQI
25AQI
24AQI
22AQI
23AQI
25AQI
25AQI
28AQI
37AQI
51AQI
56AQI
53AQI
43AQI
45AQI
52AQI
57AQI
59AQI
56AQI
36AQI
30AQI
36AQI
42AQI
38AQI
27AQI
20AQI
19AQI
25AQI
33AQI
42AQI
44AQI
32AQI
24AQI
31AQI
32AQI
28AQI
46AQI
32AQI
21AQI
22AQI
29AQI
37AQI
38AQI
31AQI
27AQI
28AQI
29AQI
22AQI
23AQI
19AQI
22AQI
29AQI
28AQI
40AQI
36AQI
36AQI
29AQI
No. of days
202536AQI
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
May28AQI
Most & Least Polluted Years Over the Last 1 Years
Trnava's annual 2025 AQI (36) shows an average percentage change of NaN% (improved AQI) compared to previous years: .