Main Street, Chester, 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
Main Street, Chester, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 26 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Aug - 13th Aug 2025
Main Street, Chester, California, United States
6 AM12th Aug 2025
8 PM
5 AM13th Aug 2025
35AQI
22AQI
28AQI
24AQI
In the last 24 hours,
Main Street's AQI reached its highest point of 35 at 12 PM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 12th Aug and 13th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Main Street, Chester, California, United States
25°C19/33°C
23°C17/30°C
22°C16/28°C
20°C13/28°C
21°C14/28°C
22°C14/29°C
21°C14/28°C
17°C12/24°C
17°C10/24°C
18°C11/26°C
19°C12/27°C
18°C11/26°C
17°C10/23°C
18°C12/24°C
19°C12/27°C
21°C13/28°C
19°C14/25°C
19°C12/26°C
20°C13/27°C
20°C14/27°C
19°C13/26°C
18°C11/24°C
18°C11/26°C
19°C12/26°C
20°C12/27°C
22°C14/29°C
24°C16/31°C
24°C17/32°C
25°C18/33°C
25°C18/33°C
--°C/°C
31AQI
27AQI
27AQI
24AQI
2025 Days Vs Air Quality
Main Street, Chester, California, United States
97%
136
3%
4
Total number of days with different AQI categories in last 225 days in 2025 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 225 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
Main Street, Chester, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
23AQI
34AQI
35AQI
32AQI
26AQI
36AQI
41AQI
33AQI
34AQI
33AQI
32AQI
23AQI
30AQI
38AQI
39AQI
31AQI
28AQI
28AQI
32AQI
35AQI
36AQI
27AQI
24AQI
28AQI
25AQI
23AQI
30AQI
29AQI
31AQI
29AQI
28AQI
24AQI
24AQI
23AQI
24AQI
21AQI
23AQI
22AQI
20AQI
20AQI
19AQI
28AQI
22AQI
25AQI
24AQI
28AQI
36AQI
23AQI
23AQI
19AQI
20AQI
19AQI
19AQI
19AQI
18AQI
19AQI
19AQI
19AQI
23AQI
21AQI
17AQI
19AQI
23AQI
19AQI
22AQI
20AQI
21AQI
19AQI
20AQI
19AQI
25AQI
25AQI
28AQI
28AQI
29AQI
25AQI
30AQI
26AQI
24AQI
23AQI
21AQI
20AQI
23AQI
20AQI
21AQI
31AQI
24AQI
23AQI
22AQI
24AQI
27AQI
28AQI
29AQI
24AQI
23AQI
31AQI
31AQI
25AQI
29AQI
24AQI
26AQI
32AQI
44AQI
26AQI
22AQI
44AQI
52AQI
54AQI
59AQI
60AQI
43AQI
36AQI
34AQI
33AQI
32AQI
34AQI
26AQI
18AQI
18AQI
21AQI
24AQI
23AQI
24AQI
24AQI
27AQI
27AQI
22AQI
25AQI
25AQI
22AQI
23AQI
23AQI
23AQI
21AQI
23AQI
21AQI
22AQI
24AQI
26AQI
30AQI
30AQI
22AQI
24AQI
32AQI
23AQI
No. of days
202527AQI
Highest AQI recorded in
July32AQI
Lowest AQI recorded in
May22AQI
Most & Least Polluted Years Over the Last 1 Years
Main Street's annual 2025 AQI (27) shows an average percentage change of NaN% (improved AQI) compared to previous years: .