Thousand Oaks, California, United States 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
Thousand Oaks, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 37 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Thousand Oaks, California, United States
5 AM1st Jun 2026
7 PM
4 AM2nd Jun 2026
43AQI
26AQI
52AQI
29AQI
In the last 24 hours,
Thousand Oaks's AQI reached its highest point of 52 at 3 AM during the Night, while the lowest point, 26, was recorded at 5 AM during the Day between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Thousand Oaks, California, United States
15°C11/21°C
15°C9/21°C
17°C9/26°C
19°C11/28°C
18°C11/26°C
18°C12/27°C
18°C10/27°C
20°C12/30°C
16°C11/24°C
17°C13/24°C
17°C11/25°C
16°C11/24°C
17°C12/26°C
17°C11/24°C
20°C11/31°C
20°C11/34°C
20°C13/29°C
20°C13/30°C
18°C12/25°C
17°C12/24°C
16°C11/23°C
17°C10/24°C
16°C11/21°C
15°C10/21°C
15°C9/20°C
17°C10/24°C
19°C11/29°C
20°C11/30°C
20°C13/29°C
18°C14/25°C
48AQI
31AQI
37AQI
29AQI
2026 Days Vs Air Quality
Thousand Oaks, California, United States
97%
145
3%
5
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 153 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
Thousand Oaks, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
17AQI (US)
17AQI (US)
15AQI (US)
25AQI (US)
22AQI (US)
25AQI (US)
28AQI (US)
23AQI (US)
25AQI (US)
17AQI (US)
19AQI (US)
22AQI (US)
18AQI (US)
23AQI (US)
28AQI (US)
24AQI (US)
22AQI (US)
21AQI (US)
22AQI (US)
26AQI (US)
34AQI (US)
44AQI (US)
45AQI (US)
33AQI (US)
39AQI (US)
39AQI (US)
30AQI (US)
32AQI (US)
45AQI (US)
53AQI (US)
30AQI (US)
42AQI (US)
47AQI (US)
45AQI (US)
34AQI (US)
46AQI (US)
40AQI (US)
37AQI (US)
30AQI (US)
40AQI (US)
37AQI (US)
29AQI (US)
24AQI (US)
28AQI (US)
32AQI (US)
30AQI (US)
45AQI (US)
44AQI (US)
36AQI (US)
35AQI (US)
27AQI (US)
31AQI (US)
38AQI (US)
36AQI (US)
30AQI (US)
35AQI (US)
26AQI (US)
30AQI (US)
25AQI (US)
31AQI (US)
42AQI (US)
26AQI (US)
36AQI (US)
26AQI (US)
20AQI (US)
30AQI (US)
30AQI (US)
26AQI (US)
28AQI (US)
32AQI (US)
29AQI (US)
33AQI (US)
26AQI (US)
22AQI (US)
25AQI (US)
27AQI (US)
25AQI (US)
30AQI (US)
42AQI (US)
27AQI (US)
27AQI (US)
32AQI (US)
32AQI (US)
25AQI (US)
22AQI (US)
34AQI (US)
22AQI (US)
18AQI (US)
25AQI (US)
28AQI (US)
24AQI (US)
18AQI (US)
33AQI (US)
28AQI (US)
25AQI (US)
34AQI (US)
31AQI (US)
37AQI (US)
27AQI (US)
26AQI (US)
29AQI (US)
21AQI (US)
22AQI (US)
21AQI (US)
31AQI (US)
22AQI (US)
24AQI (US)
30AQI (US)
21AQI (US)
18AQI (US)
19AQI (US)
19AQI (US)
23AQI (US)
26AQI (US)
19AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
32AQI (US)
30AQI (US)
24AQI (US)
32AQI (US)
32AQI (US)
30AQI (US)
32AQI (US)
39AQI (US)
29AQI (US)
36AQI (US)
30AQI (US)
34AQI (US)
28AQI (US)
48AQI (US)
50AQI (US)
58AQI (US)
57AQI (US)
56AQI (US)
51AQI (US)
42AQI (US)
50AQI (US)
50AQI (US)
44AQI (US)
42AQI (US)
26AQI (US)
20AQI (US)
16AQI (US)
16AQI (US)
17AQI (US)
24AQI (US)
34AQI (US)
37AQI (US)
28AQI (US)
35AQI (US)
28AQI (US)
25AQI (US)
36AQI (US)
36AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
May36AQI (US)
Lowest AQI (US) recorded in
April25AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
August50AQI (US)
Lowest AQI (US) recorded in
March27AQI (US)
202434AQI (US)
Highest AQI (US) recorded in
June39AQI (US)
Lowest AQI (US) recorded in
February27AQI (US)
202334AQI (US)
Highest AQI (US) recorded in
July42AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202238AQI (US)
Highest AQI (US) recorded in
August51AQI (US)
Lowest AQI (US) recorded in
December29AQI (US)
202137AQI (US)
Highest AQI (US) recorded in
April41AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202039AQI (US)
Highest AQI (US) recorded in
September52AQI (US)
Lowest AQI (US) recorded in
April29AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Thousand Oaks's annual 2026 AQI (US) (30) shows an average percentage change of -17.5% (improved AQI (US)) compared to previous years: 2020 (39), 2021 (37), 2022 (38), 2023 (34), 2024 (34), 2025 (37).