Regional Park, Nipomo, California, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Regional Park, Nipomo, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (24th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 41 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 24th Sep - 25th Sep 2025
Regional Park, Nipomo, California, United States
6 AM24th Sep 2025
7 PM
5 AM25th Sep 2025
48AQI
35AQI
44AQI
26AQI
In the last 24 hours,
Regional Park's AQI reached its highest point of 48 at 3 PM during the Day, while the lowest point, 26, was recorded at 5 AM during the Night between 24th Sep and 25th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Regional Park, Nipomo, California, United States
20°C13/32°C
20°C13/31°C
20°C13/32°C
19°C13/30°C
23°C14/34°C
26°C17/38°C
26°C18/38°C
20°C15/31°C
20°C14/31°C
19°C14/28°C
18°C13/29°C
19°C14/28°C
19°C11/31°C
19°C14/26°C
19°C16/24°C
19°C15/25°C
19°C15/25°C
19°C15/29°C
19°C15/26°C
21°C14/32°C
21°C14/33°C
23°C16/36°C
22°C16/34°C
19°C18/23°C
21°C16/28°C
19°C15/27°C
19°C15/27°C
20°C15/30°C
20°C15/34°C
21°C16/30°C
--°C/°C
43AQI
31AQI
44AQI
35AQI
2025 Days Vs Air Quality
Regional Park, Nipomo, California, United States
96%
176
4%
7
Total number of days with different AQI categories in last 268 days in 2025 (97 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 268 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
Regional Park, Nipomo, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
20AQI
31AQI
25AQI
24AQI
18AQI
19AQI
21AQI
25AQI
30AQI
28AQI
28AQI
30AQI
22AQI
34AQI
39AQI
44AQI
49AQI
43AQI
38AQI
40AQI
39AQI
30AQI
32AQI
38AQI
33AQI
31AQI
34AQI
32AQI
39AQI
31AQI
18AQI
19AQI
30AQI
39AQI
25AQI
22AQI
29AQI
34AQI
36AQI
41AQI
44AQI
41AQI
49AQI
42AQI
50AQI
42AQI
27AQI
25AQI
34AQI
39AQI
37AQI
31AQI
29AQI
45AQI
46AQI
46AQI
53AQI
38AQI
36AQI
37AQI
34AQI
30AQI
40AQI
39AQI
40AQI
40AQI
33AQI
35AQI
36AQI
48AQI
33AQI
33AQI
45AQI
31AQI
31AQI
40AQI
46AQI
49AQI
44AQI
44AQI
43AQI
48AQI
47AQI
50AQI
50AQI
48AQI
44AQI
43AQI
39AQI
32AQI
32AQI
26AQI
29AQI
36AQI
31AQI
29AQI
27AQI
24AQI
32AQI
35AQI
52AQI
44AQI
33AQI
27AQI
30AQI
31AQI
34AQI
40AQI
28AQI
24AQI
22AQI
22AQI
21AQI
25AQI
33AQI
27AQI
19AQI
16AQI
16AQI
18AQI
16AQI
16AQI
17AQI
22AQI
33AQI
32AQI
31AQI
23AQI
29AQI
34AQI
53AQI
42AQI
38AQI
36AQI
32AQI
36AQI
33AQI
36AQI
40AQI
35AQI
27AQI
26AQI
24AQI
20AQI
31AQI
39AQI
44AQI
52AQI
58AQI
45AQI
41AQI
45AQI
47AQI
50AQI
49AQI
37AQI
46AQI
54AQI
54AQI
40AQI
42AQI
39AQI
39AQI
34AQI
36AQI
22AQI
22AQI
20AQI
29AQI
39AQI
47AQI
43AQI
34AQI
35AQI
33AQI
39AQI
41AQI
41AQI
36AQI
32AQI
36AQI
41AQI
23AQI
32AQI
38AQI
39AQI
27AQI
39AQI
36AQI
No. of days
202535AQI
Highest AQI recorded in
June39AQI
Lowest AQI recorded in
March23AQI
Most & Least Polluted Years Over the Last 1 Years
Regional Park's annual 2025 AQI (35) shows an average percentage change of NaN% (improved AQI) compared to previous years: .