San Juan Bautista, California, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
San Juan Bautista, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 11 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
San Juan Bautista, California, United States
6 AM2nd Oct 2025
7 PM
5 AM3rd Oct 2025
17AQI
6AQI
41AQI
6AQI
In the last 24 hours,
San Juan Bautista's AQI reached its highest point of 41 at 9 PM during the Night, while the lowest point, 6, was recorded at 3 AM during the Night between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
San Juan Bautista, California, United States
--°C/°C
19°C11/29°C
17°C12/26°C
18°C11/28°C
20°C13/31°C
18°C14/27°C
19°C15/27°C
17°C14/25°C
16°C12/26°C
17°C12/28°C
16°C12/27°C
19°C10/30°C
22°C13/36°C
24°C16/37°C
24°C15/39°C
19°C15/28°C
20°C13/31°C
19°C11/31°C
21°C12/32°C
21°C12/33°C
24°C15/39°C
21°C17/28°C
21°C16/28°C
20°C15/31°C
17°C13/23°C
19°C16/25°C
18°C16/23°C
19°C14/25°C
20°C14/29°C
18°C14/21°C
17°C14/22°C
34AQI
30AQI
37AQI
32AQI
2025 Days Vs Air Quality
San Juan Bautista, California, United States
99%
190
1%
2
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 277 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
San Juan Bautista, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
18AQI
24AQI
17AQI
18AQI
19AQI
18AQI
17AQI
19AQI
20AQI
19AQI
21AQI
17AQI
15AQI
20AQI
24AQI
21AQI
28AQI
33AQI
30AQI
29AQI
35AQI
30AQI
27AQI
29AQI
28AQI
30AQI
29AQI
36AQI
35AQI
22AQI
16AQI
15AQI
29AQI
32AQI
32AQI
33AQI
36AQI
21AQI
30AQI
37AQI
44AQI
46AQI
41AQI
30AQI
29AQI
23AQI
21AQI
16AQI
25AQI
31AQI
37AQI
35AQI
33AQI
38AQI
29AQI
34AQI
34AQI
24AQI
29AQI
25AQI
19AQI
22AQI
32AQI
20AQI
32AQI
44AQI
45AQI
47AQI
37AQI
43AQI
46AQI
33AQI
34AQI
28AQI
26AQI
32AQI
40AQI
48AQI
45AQI
39AQI
40AQI
40AQI
35AQI
35AQI
40AQI
40AQI
35AQI
32AQI
33AQI
26AQI
28AQI
30AQI
34AQI
34AQI
31AQI
27AQI
30AQI
29AQI
42AQI
31AQI
43AQI
36AQI
29AQI
25AQI
25AQI
31AQI
44AQI
45AQI
36AQI
29AQI
24AQI
24AQI
22AQI
24AQI
27AQI
23AQI
24AQI
17AQI
17AQI
18AQI
18AQI
17AQI
18AQI
23AQI
29AQI
30AQI
29AQI
24AQI
25AQI
25AQI
33AQI
26AQI
30AQI
29AQI
30AQI
42AQI
36AQI
36AQI
39AQI
32AQI
26AQI
34AQI
20AQI
17AQI
23AQI
29AQI
34AQI
44AQI
51AQI
49AQI
47AQI
39AQI
45AQI
46AQI
45AQI
36AQI
37AQI
34AQI
36AQI
48AQI
43AQI
31AQI
39AQI
38AQI
27AQI
22AQI
21AQI
18AQI
26AQI
34AQI
38AQI
24AQI
25AQI
36AQI
47AQI
52AQI
48AQI
46AQI
38AQI
36AQI
44AQI
47AQI
37AQI
45AQI
45AQI
24AQI
28AQI
30AQI
16AQI
14AQI
11AQI
19AQI
25AQI
31AQI
36AQI
28AQI
34AQI
36AQI
14AQI
No. of days
202531AQI
Highest AQI recorded in
June36AQI
Lowest AQI recorded in
October14AQI
Most & Least Polluted Years Over the Last 1 Years
San Juan Bautista's annual 2025 AQI (31) shows an average percentage change of NaN% (improved AQI) compared to previous years: .