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!
October Air Quality Analysis
Susanville, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (26th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 35 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 26th Oct - 27th Oct 2025
Susanville, California, United States
7 AM26th Oct 2025
6 PM
6 AM27th Oct 2025
33AQI
22AQI
56AQI
31AQI
In the last 24 hours,
Susanville's AQI reached its highest point of 56 at 2 AM during the Night, while the lowest point, 22, was recorded at 3 PM during the Day between 26th Oct and 27th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Susanville, California, United States
19°C10/28°C
16°C11/23°C
13°C10/18°C
11°C9/14°C
11°C7/15°C
10°C7/16°C
10°C5/15°C
11°C4/20°C
11°C4/19°C
12°C4/21°C
14°C6/24°C
14°C6/23°C
11°C6/17°C
10°C6/15°C
7°C2/12°C
8°C0/17°C
5°C1/8°C
9°C3/16°C
8°C2/15°C
9°C0/20°C
12°C4/22°C
13°C5/24°C
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
--°C/°C
42AQI
26AQI
48AQI
26AQI
2025 Days Vs Air Quality
Susanville, California, United States
90%
270
10%
29
Total number of days with different AQI categories in last 300 days in 2025 (65 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 300 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
Susanville, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
61AQI
58AQI
52AQI
48AQI
59AQI
50AQI
39AQI
46AQI
54AQI
53AQI
42AQI
47AQI
43AQI
68AQI
67AQI
74AQI
80AQI
66AQI
65AQI
52AQI
60AQI
58AQI
56AQI
70AQI
43AQI
37AQI
49AQI
57AQI
59AQI
66AQI
56AQI
46AQI
36AQI
34AQI
39AQI
33AQI
46AQI
31AQI
44AQI
40AQI
40AQI
48AQI
52AQI
37AQI
21AQI
22AQI
30AQI
26AQI
31AQI
35AQI
28AQI
30AQI
34AQI
26AQI
27AQI
22AQI
27AQI
32AQI
28AQI
26AQI
26AQI
21AQI
30AQI
31AQI
23AQI
27AQI
26AQI
27AQI
26AQI
24AQI
15AQI
25AQI
25AQI
33AQI
29AQI
28AQI
27AQI
34AQI
28AQI
28AQI
29AQI
27AQI
35AQI
32AQI
40AQI
22AQI
34AQI
36AQI
35AQI
25AQI
31AQI
31AQI
30AQI
31AQI
30AQI
29AQI
22AQI
28AQI
36AQI
36AQI
31AQI
27AQI
28AQI
31AQI
35AQI
37AQI
28AQI
24AQI
26AQI
25AQI
24AQI
28AQI
29AQI
33AQI
31AQI
28AQI
26AQI
23AQI
24AQI
25AQI
23AQI
25AQI
22AQI
20AQI
20AQI
19AQI
25AQI
24AQI
25AQI
25AQI
25AQI
26AQI
26AQI
23AQI
19AQI
21AQI
20AQI
20AQI
20AQI
18AQI
21AQI
21AQI
23AQI
25AQI
24AQI
19AQI
20AQI
26AQI
21AQI
23AQI
24AQI
23AQI
20AQI
21AQI
22AQI
27AQI
27AQI
31AQI
28AQI
29AQI
28AQI
31AQI
29AQI
28AQI
26AQI
25AQI
23AQI
25AQI
24AQI
23AQI
30AQI
35AQI
31AQI
27AQI
25AQI
29AQI
28AQI
31AQI
30AQI
28AQI
33AQI
34AQI
28AQI
31AQI
26AQI
27AQI
31AQI
38AQI
27AQI
23AQI
39AQI
53AQI
54AQI
57AQI
59AQI
49AQI
43AQI
43AQI
38AQI
31AQI
32AQI
26AQI
20AQI
20AQI
22AQI
24AQI
22AQI
22AQI
25AQI
26AQI
26AQI
23AQI
28AQI
29AQI
23AQI
25AQI
25AQI
25AQI
22AQI
24AQI
22AQI
23AQI
24AQI
30AQI
30AQI
31AQI
28AQI
28AQI
20AQI
18AQI
21AQI
23AQI
26AQI
31AQI
31AQI
35AQI
31AQI
39AQI
42AQI
37AQI
31AQI
36AQI
41AQI
35AQI
32AQI
40AQI
32AQI
38AQI
39AQI
35AQI
32AQI
22AQI
21AQI
24AQI
30AQI
30AQI
29AQI
23AQI
22AQI
28AQI
31AQI
31AQI
28AQI
27AQI
22AQI
23AQI
23AQI
35AQI
31AQI
22AQI
34AQI
25AQI
18AQI
22AQI
22AQI
25AQI
30AQI
38AQI
54AQI
30AQI
38AQI
42AQI
39AQI
34AQI
46AQI
35AQI
43AQI
34AQI
47AQI
44AQI
53AQI
50AQI
41AQI
42AQI
64AQI
47AQI
46AQI
45AQI
35AQI
56AQI
34AQI
28AQI
29AQI
22AQI
27AQI
33AQI
28AQI
29AQI
40AQI
No. of days
202533AQI
Highest AQI recorded in
January56AQI
Lowest AQI recorded in
May22AQI
202433AQI
Highest AQI recorded in
December55AQI
Lowest AQI recorded in
May17AQI
202329AQI
Highest AQI recorded in
January56AQI
Lowest AQI recorded in
May13AQI
202238AQI
Highest AQI recorded in
December66AQI
Lowest AQI recorded in
July18AQI
202157AQI
Highest AQI recorded in
August132AQI
Lowest AQI recorded in
May19AQI
202046AQI
Highest AQI recorded in
September114AQI
Lowest AQI recorded in
June19AQI
Most & Least Polluted Years Over the Last 6 Years
Susanville's annual 2025 AQI (33) shows an average percentage change of -15.1% (improved AQI) compared to previous years: 2020 (46), 2021 (57), 2022 (38), 2023 (29), 2024 (33).