Paso Robles, 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
Paso Robles, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (19th October ):
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: 18th Oct - 19th Oct 2025
Paso Robles, California, United States
7 AM18th Oct 2025
6 PM
6 AM19th Oct 2025
50AQI
14AQI
24AQI
9AQI
In the last 24 hours,
Paso Robles's AQI reached its highest point of 50 at 10 AM during the Day, while the lowest point, 9, was recorded at 5 AM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Paso Robles, California, United States
--°C/°C
21°C12/33°C
23°C14/34°C
23°C12/35°C
25°C16/38°C
22°C17/31°C
23°C16/31°C
21°C15/30°C
18°C14/22°C
18°C15/22°C
18°C15/22°C
17°C11/23°C
19°C13/29°C
19°C12/28°C
17°C10/24°C
17°C9/27°C
19°C9/28°C
18°C10/31°C
18°C10/30°C
16°C12/21°C
15°C7/25°C
17°C11/27°C
17°C10/26°C
17°C8/27°C
14°C7/20°C
11°C9/14°C
12°C6/17°C
14°C9/20°C
16°C8/26°C
17°C8/28°C
17°C7/28°C
33AQI
26AQI
31AQI
26AQI
2025 Days Vs Air Quality
Paso Robles, California, United States
98%
204
2%
4
Total number of days with different AQI categories in last 293 days in 2025 (72 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 293 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
Paso Robles, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
18AQI
20AQI
17AQI
17AQI
16AQI
16AQI
19AQI
17AQI
21AQI
17AQI
18AQI
17AQI
19AQI
21AQI
25AQI
24AQI
28AQI
27AQI
29AQI
26AQI
25AQI
22AQI
22AQI
21AQI
26AQI
22AQI
22AQI
23AQI
24AQI
21AQI
14AQI
11AQI
17AQI
22AQI
21AQI
19AQI
20AQI
18AQI
24AQI
29AQI
31AQI
27AQI
31AQI
27AQI
25AQI
23AQI
19AQI
17AQI
19AQI
25AQI
27AQI
23AQI
20AQI
28AQI
25AQI
29AQI
35AQI
35AQI
31AQI
28AQI
24AQI
23AQI
27AQI
22AQI
27AQI
34AQI
34AQI
27AQI
22AQI
25AQI
22AQI
19AQI
23AQI
20AQI
20AQI
24AQI
27AQI
36AQI
32AQI
30AQI
32AQI
41AQI
39AQI
35AQI
38AQI
40AQI
35AQI
32AQI
35AQI
26AQI
23AQI
27AQI
29AQI
35AQI
34AQI
27AQI
27AQI
26AQI
31AQI
31AQI
53AQI
42AQI
34AQI
27AQI
24AQI
30AQI
36AQI
40AQI
34AQI
27AQI
28AQI
23AQI
25AQI
20AQI
25AQI
30AQI
25AQI
20AQI
17AQI
17AQI
17AQI
18AQI
18AQI
20AQI
24AQI
32AQI
30AQI
35AQI
30AQI
35AQI
52AQI
49AQI
52AQI
52AQI
47AQI
48AQI
39AQI
36AQI
40AQI
42AQI
36AQI
36AQI
24AQI
20AQI
29AQI
37AQI
34AQI
43AQI
50AQI
46AQI
47AQI
40AQI
47AQI
45AQI
45AQI
33AQI
40AQI
46AQI
41AQI
36AQI
38AQI
41AQI
36AQI
38AQI
37AQI
22AQI
20AQI
22AQI
25AQI
30AQI
41AQI
43AQI
43AQI
45AQI
30AQI
33AQI
37AQI
34AQI
33AQI
31AQI
34AQI
36AQI
32AQI
34AQI
42AQI
25AQI
32AQI
45AQI
23AQI
22AQI
26AQI
28AQI
29AQI
21AQI
31AQI
21AQI
24AQI
24AQI
23AQI
23AQI
25AQI
21AQI
17AQI
30AQI
35AQI
34AQI
29AQI
18AQI
21AQI
26AQI
30AQI
27AQI
40AQI
35AQI
26AQI
No. of days
202529AQI
Highest AQI recorded in
August40AQI
Lowest AQI recorded in
March18AQI
Most & Least Polluted Years Over the Last 1 Years
Paso Robles's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .