Siena, Tuscany, Italy Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Siena, Tuscany, Italy
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 30 of Good air quality, showing improvement over 2025 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Siena, Tuscany, Italy
5 AM1st Jun 2026
8 PM
4 AM2nd Jun 2026
48AQI
28AQI
33AQI
22AQI
In the last 24 hours,
Siena's AQI reached its highest point of 48 at 7 AM during the Day, while the lowest point, 22, was recorded at 1 AM during the Night between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Siena, Tuscany, Italy
15°C11/20°C
16°C14/19°C
17°C15/19°C
16°C13/20°C
17°C13/20°C
17°C13/21°C
17°C15/19°C
18°C15/20°C
17°C13/21°C
16°C11/21°C
16°C11/20°C
15°C14/18°C
14°C11/17°C
15°C9/19°C
15°C10/19°C
16°C11/20°C
17°C12/22°C
20°C13/25°C
21°C15/27°C
21°C15/28°C
22°C16/29°C
22°C16/28°C
22°C18/27°C
23°C19/28°C
23°C19/29°C
20°C17/24°C
21°C16/26°C
21°C17/25°C
21°C17/26°C
21°C17/24°C
41AQI
28AQI
38AQI
34AQI
2026 Days Vs Air Quality
Siena, Tuscany, Italy
50%
75
41%
62
9%
13
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 50%
Health Risk Level:
Considerable
In 2026, 50% of 153 days were within WHO’s safe air quality limits, and 50% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Siena, Tuscany, Italy
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
74AQI (US)
66AQI (US)
64AQI (US)
72AQI (US)
49AQI (US)
63AQI (US)
62AQI (US)
57AQI (US)
84AQI (US)
76AQI (US)
49AQI (US)
50AQI (US)
72AQI (US)
76AQI (US)
86AQI (US)
90AQI (US)
86AQI (US)
77AQI (US)
59AQI (US)
62AQI (US)
81AQI (US)
104AQI (US)
124AQI (US)
82AQI (US)
88AQI (US)
90AQI (US)
65AQI (US)
48AQI (US)
75AQI (US)
95AQI (US)
92AQI (US)
87AQI (US)
90AQI (US)
74AQI (US)
53AQI (US)
28AQI (US)
46AQI (US)
78AQI (US)
90AQI (US)
95AQI (US)
88AQI (US)
68AQI (US)
68AQI (US)
64AQI (US)
42AQI (US)
24AQI (US)
58AQI (US)
53AQI (US)
36AQI (US)
39AQI (US)
56AQI (US)
38AQI (US)
70AQI (US)
96AQI (US)
108AQI (US)
116AQI (US)
124AQI (US)
118AQI (US)
117AQI (US)
110AQI (US)
106AQI (US)
106AQI (US)
106AQI (US)
106AQI (US)
100AQI (US)
100AQI (US)
108AQI (US)
92AQI (US)
96AQI (US)
98AQI (US)
76AQI (US)
76AQI (US)
44AQI (US)
30AQI (US)
56AQI (US)
47AQI (US)
34AQI (US)
62AQI (US)
60AQI (US)
68AQI (US)
70AQI (US)
78AQI (US)
74AQI (US)
49AQI (US)
20AQI (US)
30AQI (US)
34AQI (US)
46AQI (US)
48AQI (US)
46AQI (US)
16AQI (US)
24AQI (US)
34AQI (US)
24AQI (US)
44AQI (US)
46AQI (US)
46AQI (US)
43AQI (US)
26AQI (US)
25AQI (US)
52AQI (US)
74AQI (US)
49AQI (US)
49AQI (US)
62AQI (US)
58AQI (US)
42AQI (US)
44AQI (US)
64AQI (US)
20AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
38AQI (US)
42AQI (US)
30AQI (US)
39AQI (US)
12AQI (US)
14AQI (US)
16AQI (US)
14AQI (US)
22AQI (US)
38AQI (US)
36AQI (US)
27AQI (US)
33AQI (US)
52AQI (US)
46AQI (US)
18AQI (US)
44AQI (US)
18AQI (US)
26AQI (US)
36AQI (US)
41AQI (US)
32AQI (US)
36AQI (US)
36AQI (US)
42AQI (US)
37AQI (US)
39AQI (US)
50AQI (US)
48AQI (US)
38AQI (US)
26AQI (US)
52AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
34AQI (US)
30AQI (US)
75AQI (US)
72AQI (US)
70AQI (US)
39AQI (US)
33AQI (US)
32AQI (US)
No. of days
202658AQI (US)
Highest AQI (US) recorded in
January75AQI (US)
Lowest AQI (US) recorded in
June32AQI (US)
202550AQI (US)
Highest AQI (US) recorded in
December83AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
202441AQI (US)
Highest AQI (US) recorded in
February56AQI (US)
Lowest AQI (US) recorded in
May30AQI (US)
202350AQI (US)
Highest AQI (US) recorded in
December52AQI (US)
Lowest AQI (US) recorded in
March31AQI (US)
202246AQI (US)
Highest AQI (US) recorded in
March58AQI (US)
Lowest AQI (US) recorded in
April32AQI (US)
202140AQI (US)
Highest AQI (US) recorded in
February50AQI (US)
Lowest AQI (US) recorded in
May25AQI (US)
202039AQI (US)
Highest AQI (US) recorded in
November54AQI (US)
Lowest AQI (US) recorded in
June28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Siena's annual 2026 AQI (US) (58) shows an average percentage change of 32.2% (worsened AQI (US)) compared to previous years: 2020 (39), 2021 (40), 2022 (46), 2023 (50), 2024 (41), 2025 (50).