West 9th Street, Gilroy, 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
West 9th Street, Gilroy, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (8th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 28 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 8th Aug - 9th Aug 2025
West 9th Street, Gilroy, California, United States
6 AM8th Aug 2025
8 PM
5 AM9th Aug 2025
37AQI
21AQI
54AQI
30AQI
In the last 24 hours,
West 9th Street's AQI reached its highest point of 54 at 2 AM during the Night, while the lowest point, 21, was recorded at 8 AM during the Day between 8th Aug and 9th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
West 9th Street, Gilroy, California, United States
22°C10/37°C
21°C11/34°C
17°C11/29°C
19°C13/31°C
20°C12/32°C
16°C12/24°C
16°C13/22°C
19°C12/29°C
19°C13/28°C
18°C12/29°C
16°C12/24°C
17°C13/25°C
18°C13/24°C
18°C14/25°C
18°C14/25°C
18°C13/25°C
18°C14/25°C
19°C14/27°C
20°C13/31°C
20°C11/32°C
18°C14/27°C
19°C14/29°C
18°C14/28°C
19°C14/30°C
20°C13/30°C
19°C11/31°C
19°C11/30°C
22°C9/36°C
20°C12/32°C
20°C11/35°C
--°C/°C
28AQI
28AQI
29AQI
27AQI
2025 Days Vs Air Quality
West 9th Street, Gilroy, California, United States
99%
134
1%
2
Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 221 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
West 9th Street, Gilroy, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
19AQI
27AQI
21AQI
21AQI
22AQI
20AQI
19AQI
20AQI
23AQI
19AQI
22AQI
19AQI
18AQI
18AQI
25AQI
19AQI
32AQI
35AQI
36AQI
30AQI
35AQI
32AQI
29AQI
31AQI
32AQI
33AQI
35AQI
43AQI
40AQI
24AQI
18AQI
17AQI
34AQI
36AQI
32AQI
30AQI
35AQI
24AQI
33AQI
39AQI
49AQI
43AQI
37AQI
24AQI
27AQI
25AQI
22AQI
17AQI
25AQI
35AQI
42AQI
41AQI
41AQI
44AQI
37AQI
38AQI
38AQI
28AQI
33AQI
27AQI
21AQI
24AQI
35AQI
21AQI
33AQI
46AQI
48AQI
48AQI
43AQI
44AQI
44AQI
37AQI
39AQI
37AQI
35AQI
37AQI
44AQI
51AQI
51AQI
48AQI
47AQI
46AQI
38AQI
38AQI
44AQI
44AQI
38AQI
35AQI
36AQI
28AQI
31AQI
33AQI
38AQI
36AQI
33AQI
28AQI
30AQI
27AQI
41AQI
33AQI
45AQI
37AQI
30AQI
26AQI
29AQI
33AQI
45AQI
45AQI
39AQI
31AQI
28AQI
25AQI
22AQI
25AQI
30AQI
23AQI
25AQI
16AQI
16AQI
18AQI
19AQI
18AQI
19AQI
26AQI
32AQI
31AQI
29AQI
25AQI
26AQI
26AQI
39AQI
30AQI
35AQI
31AQI
28AQI
22AQI
28AQI
33AQI
40AQI
29AQI
30AQI
No. of days
202532AQI
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
March22AQI
Most & Least Polluted Years Over the Last 1 Years
West 9th Street's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .