Ussr, Siena, Tuscany, Italy Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Ussr, Siena, Tuscany, Italy
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Ussr, Siena, Tuscany, Italy
5 AM3rd Aug 2025
8 PM
4 AM4th Aug 2025
36AQI
30AQI
34AQI
31AQI
In the last 24 hours,
Ussr's AQI reached its highest point of 36 at 9 AM during the Day, while the lowest point, 30, was recorded at 12 PM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ussr, Siena, Tuscany, Italy
27°C23/31°C
26°C23/30°C
26°C22/29°C
25°C20/28°C
22°C15/29°C
23°C17/28°C
23°C17/27°C
23°C18/27°C
22°C19/26°C
23°C19/28°C
25°C20/30°C
27°C23/31°C
26°C21/29°C
25°C21/29°C
25°C21/29°C
26°C22/29°C
26°C23/29°C
26°C21/30°C
24°C19/29°C
25°C20/29°C
26°C21/32°C
24°C20/27°C
23°C18/27°C
23°C19/28°C
23°C17/29°C
23°C17/29°C
23°C18/28°C
23°C19/27°C
23°C19/27°C
23°C18/29°C
--°C/°C
34AQI
31AQI
35AQI
31AQI
2025 Days Vs Air Quality
Ussr, Siena, Tuscany, Italy
71%
153
27%
58
2%
4
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 71%
Health Risk Level:
Low
In 2025, 71% of 216 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Ussr, Siena, Tuscany, Italy
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
90AQI
67AQI
79AQI
86AQI
88AQI
73AQI
64AQI
88AQI
67AQI
50AQI
47AQI
38AQI
40AQI
43AQI
49AQI
40AQI
43AQI
52AQI
49AQI
50AQI
54AQI
63AQI
62AQI
56AQI
56AQI
50AQI
49AQI
44AQI
41AQI
33AQI
37AQI
43AQI
42AQI
51AQI
52AQI
52AQI
54AQI
53AQI
50AQI
49AQI
57AQI
56AQI
58AQI
53AQI
49AQI
54AQI
52AQI
56AQI
58AQI
58AQI
56AQI
56AQI
65AQI
86AQI
118AQI
144AQI
148AQI
120AQI
68AQI
44AQI
40AQI
45AQI
49AQI
49AQI
54AQI
56AQI
54AQI
56AQI
51AQI
51AQI
43AQI
42AQI
48AQI
44AQI
43AQI
42AQI
42AQI
38AQI
45AQI
51AQI
53AQI
45AQI
39AQI
41AQI
41AQI
38AQI
41AQI
42AQI
32AQI
34AQI
33AQI
32AQI
37AQI
42AQI
40AQI
42AQI
41AQI
44AQI
42AQI
48AQI
48AQI
44AQI
45AQI
35AQI
31AQI
33AQI
29AQI
28AQI
27AQI
27AQI
23AQI
36AQI
36AQI
27AQI
29AQI
30AQI
27AQI
29AQI
35AQI
36AQI
41AQI
45AQI
47AQI
42AQI
32AQI
25AQI
25AQI
23AQI
25AQI
27AQI
30AQI
32AQI
28AQI
28AQI
33AQI
27AQI
25AQI
30AQI
32AQI
33AQI
35AQI
28AQI
28AQI
28AQI
29AQI
34AQI
34AQI
35AQI
28AQI
26AQI
29AQI
32AQI
33AQI
34AQI
34AQI
36AQI
38AQI
47AQI
49AQI
56AQI
61AQI
64AQI
66AQI
66AQI
61AQI
60AQI
56AQI
54AQI
50AQI
50AQI
54AQI
52AQI
52AQI
50AQI
53AQI
53AQI
54AQI
52AQI
49AQI
46AQI
43AQI
45AQI
42AQI
42AQI
48AQI
49AQI
49AQI
37AQI
31AQI
31AQI
32AQI
30AQI
34AQI
34AQI
36AQI
39AQI
43AQI
43AQI
36AQI
32AQI
39AQI
37AQI
29AQI
32AQI
28AQI
26AQI
31AQI
31AQI
27AQI
26AQI
25AQI
26AQI
32AQI
33AQI
33AQI
56AQI
66AQI
45AQI
35AQI
31AQI
50AQI
35AQI
33AQI
No. of days
202545AQI
Highest AQI recorded in
February66AQI
Lowest AQI recorded in
May31AQI
202441AQI
Highest AQI recorded in
December54AQI
Lowest AQI recorded in
May29AQI
202344AQI
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
March33AQI
202244AQI
Highest AQI recorded in
March54AQI
Lowest AQI recorded in
April31AQI
202136AQI
Highest AQI recorded in
February43AQI
Lowest AQI recorded in
May26AQI
202036AQI
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
October22AQI
Most & Least Polluted Years Over the Last 6 Years
Ussr's annual 2025 AQI (45) shows an average percentage change of 13.1% (worsened AQI) compared to previous years: 2020 (36), 2021 (36), 2022 (44), 2023 (44), 2024 (41).