Willow Road, Arroyo Grande, California, United States 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
Willow Road, Arroyo Grande, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (10th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 30 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Willow Road, Arroyo Grande, California, United States
6 AM11th Aug 2025
8 PM
5 AM12th Aug 2025
39AQI
18AQI
53AQI
34AQI
In the last 24 hours,
Willow Road's AQI reached its highest point of 53 at 9 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Willow Road, Arroyo Grande, California, United States
17°C14/22°C
17°C13/21°C
16°C13/20°C
16°C14/19°C
17°C14/21°C
17°C12/23°C
16°C13/21°C
16°C13/20°C
16°C13/20°C
16°C13/20°C
16°C13/21°C
16°C12/20°C
16°C14/20°C
17°C14/21°C
17°C14/21°C
17°C14/23°C
18°C13/25°C
17°C14/22°C
18°C13/23°C
17°C14/22°C
19°C14/25°C
18°C14/24°C
19°C14/28°C
20°C14/28°C
19°C13/26°C
20°C13/27°C
16°C12/22°C
17°C12/23°C
18°C13/24°C
18°C14/25°C
--°C/°C
29AQI
23AQI
31AQI
23AQI
2025 Days Vs Air Quality
Willow Road, Arroyo Grande, California, United States
84%
116
16%
22
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 224 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
Willow Road, Arroyo Grande, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
18AQI
45AQI
42AQI
25AQI
17AQI
25AQI
42AQI
39AQI
38AQI
33AQI
28AQI
35AQI
26AQI
41AQI
36AQI
42AQI
52AQI
48AQI
27AQI
41AQI
40AQI
33AQI
34AQI
32AQI
29AQI
33AQI
32AQI
41AQI
46AQI
29AQI
19AQI
26AQI
39AQI
32AQI
21AQI
19AQI
31AQI
45AQI
56AQI
52AQI
49AQI
52AQI
40AQI
35AQI
52AQI
52AQI
31AQI
39AQI
43AQI
45AQI
38AQI
34AQI
38AQI
59AQI
56AQI
55AQI
61AQI
52AQI
42AQI
39AQI
46AQI
26AQI
35AQI
40AQI
25AQI
23AQI
25AQI
33AQI
33AQI
36AQI
23AQI
23AQI
31AQI
28AQI
22AQI
24AQI
45AQI
48AQI
50AQI
51AQI
46AQI
52AQI
53AQI
52AQI
52AQI
53AQI
51AQI
55AQI
43AQI
26AQI
25AQI
24AQI
25AQI
25AQI
26AQI
23AQI
24AQI
20AQI
25AQI
32AQI
52AQI
40AQI
27AQI
22AQI
23AQI
25AQI
27AQI
28AQI
25AQI
20AQI
19AQI
19AQI
18AQI
18AQI
20AQI
19AQI
18AQI
15AQI
16AQI
16AQI
16AQI
16AQI
17AQI
21AQI
27AQI
30AQI
28AQI
21AQI
35AQI
36AQI
60AQI
53AQI
36AQI
29AQI
28AQI
30AQI
30AQI
28AQI
35AQI
42AQI
37AQI
23AQI
36AQI
No. of days
202534AQI
Highest AQI recorded in
May42AQI
Lowest AQI recorded in
July23AQI
Most & Least Polluted Years Over the Last 1 Years
Willow Road's annual 2025 AQI (34) shows an average percentage change of NaN% (improved AQI) compared to previous years: .