Chester, Susanville, California, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
November Air Quality Analysis
Chester, Susanville, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th November ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 35 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Nov - 18th Nov 2025
Chester, Susanville, California, United States
7 AM17th Nov 2025
5 PM
6 AM18th Nov 2025
44AQI
11AQI
64AQI
22AQI
In the last 24 hours,
Chester's AQI reached its highest point of 64 at 2 AM during the Night, while the lowest point, 11, was recorded at 1 PM during the Day between 17th Nov and 18th Nov 2025.
Day & Night AQI Trend : Oct - Nov 2025
Chester, Susanville, California, United States
12°C7/19°C
11°C4/19°C
12°C4/23°C
13°C7/22°C
12°C4/22°C
11°C4/21°C
8°C5/11°C
7°C5/10°C
8°C3/13°C
9°C3/17°C
12°C6/21°C
10°C6/17°C
11°C5/19°C
12°C5/21°C
12°C7/21°C
11°C6/18°C
9°C6/14°C
7°C4/9°C
8°C3/12°C
9°C7/14°C
10°C5/18°C
12°C7/20°C
12°C7/18°C
11°C6/17°C
9°C6/15°C
9°C6/11°C
8°C4/12°C
9°C5/15°C
7°C5/8°C
4°C-1/7°C
--°C/°C
51AQI
32AQI
54AQI
36AQI
2025 Days Vs Air Quality
Chester, Susanville, California, United States
89%
287
11%
34
Total number of days with different AQI categories in last 322 days in 2025 (43 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 322 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
Chester, Susanville, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
64AQI
67AQI
54AQI
52AQI
62AQI
52AQI
44AQI
48AQI
54AQI
52AQI
44AQI
45AQI
43AQI
71AQI
66AQI
74AQI
81AQI
66AQI
66AQI
58AQI
62AQI
57AQI
54AQI
71AQI
43AQI
35AQI
48AQI
55AQI
58AQI
65AQI
57AQI
50AQI
37AQI
33AQI
39AQI
32AQI
45AQI
30AQI
40AQI
34AQI
35AQI
44AQI
48AQI
38AQI
20AQI
20AQI
29AQI
23AQI
29AQI
38AQI
27AQI
27AQI
33AQI
25AQI
25AQI
23AQI
25AQI
30AQI
25AQI
23AQI
23AQI
19AQI
27AQI
31AQI
23AQI
26AQI
25AQI
26AQI
26AQI
22AQI
14AQI
25AQI
24AQI
32AQI
26AQI
29AQI
28AQI
35AQI
28AQI
28AQI
30AQI
28AQI
36AQI
34AQI
46AQI
22AQI
30AQI
31AQI
31AQI
25AQI
34AQI
38AQI
31AQI
31AQI
31AQI
29AQI
22AQI
29AQI
36AQI
34AQI
30AQI
26AQI
26AQI
30AQI
34AQI
36AQI
28AQI
24AQI
27AQI
25AQI
23AQI
28AQI
27AQI
31AQI
29AQI
28AQI
24AQI
24AQI
23AQI
24AQI
21AQI
23AQI
22AQI
20AQI
20AQI
19AQI
27AQI
23AQI
25AQI
24AQI
25AQI
30AQI
23AQI
23AQI
19AQI
20AQI
19AQI
19AQI
19AQI
17AQI
19AQI
19AQI
20AQI
23AQI
21AQI
17AQI
19AQI
22AQI
18AQI
20AQI
19AQI
21AQI
18AQI
20AQI
20AQI
24AQI
24AQI
26AQI
25AQI
28AQI
23AQI
29AQI
26AQI
24AQI
24AQI
22AQI
21AQI
22AQI
20AQI
20AQI
28AQI
25AQI
25AQI
24AQI
24AQI
28AQI
28AQI
28AQI
25AQI
24AQI
31AQI
29AQI
25AQI
29AQI
25AQI
24AQI
29AQI
40AQI
26AQI
21AQI
41AQI
53AQI
55AQI
59AQI
60AQI
47AQI
39AQI
34AQI
32AQI
31AQI
33AQI
27AQI
18AQI
18AQI
19AQI
22AQI
21AQI
23AQI
24AQI
25AQI
26AQI
22AQI
26AQI
25AQI
23AQI
23AQI
23AQI
23AQI
21AQI
23AQI
21AQI
22AQI
24AQI
28AQI
28AQI
31AQI
27AQI
26AQI
19AQI
17AQI
19AQI
21AQI
24AQI
30AQI
28AQI
34AQI
30AQI
38AQI
38AQI
33AQI
25AQI
30AQI
35AQI
28AQI
25AQI
38AQI
29AQI
36AQI
34AQI
29AQI
24AQI
18AQI
20AQI
20AQI
25AQI
26AQI
28AQI
22AQI
20AQI
24AQI
26AQI
28AQI
26AQI
26AQI
19AQI
23AQI
20AQI
37AQI
31AQI
22AQI
31AQI
22AQI
19AQI
22AQI
20AQI
22AQI
26AQI
35AQI
54AQI
27AQI
44AQI
44AQI
41AQI
32AQI
37AQI
34AQI
34AQI
29AQI
45AQI
44AQI
52AQI
50AQI
35AQI
41AQI
64AQI
45AQI
44AQI
44AQI
39AQI
46AQI
50AQI
55AQI
52AQI
53AQI
48AQI
40AQI
43AQI
45AQI
41AQI
43AQI
45AQI
50AQI
39AQI
41AQI
53AQI
47AQI
46AQI
44AQI
49AQI
47AQI
35AQI
57AQI
32AQI
28AQI
29AQI
21AQI
24AQI
32AQI
26AQI
26AQI
41AQI
44AQI
No. of days
202532AQI
Highest AQI recorded in
January57AQI
Lowest AQI recorded in
May21AQI
202434AQI
Highest AQI recorded in
December56AQI
Lowest AQI recorded in
May15AQI
202330AQI
Highest AQI recorded in
January56AQI
Lowest AQI recorded in
May13AQI
202238AQI
Highest AQI recorded in
December66AQI
Lowest AQI recorded in
July18AQI
202158AQI
Highest AQI recorded in
August160AQI
Lowest AQI recorded in
May19AQI
202044AQI
Highest AQI recorded in
September100AQI
Lowest AQI recorded in
June19AQI
Most & Least Polluted Years Over the Last 6 Years
Chester's annual 2025 AQI (32) shows an average percentage change of -16.4% (improved AQI) compared to previous years: 2020 (44), 2021 (58), 2022 (38), 2023 (30), 2024 (34).