Crescent City, 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
Crescent City, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 21 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Crescent City, California, United States
7 AM2nd Oct 2025
7 PM
6 AM3rd Oct 2025
31AQI
14AQI
17AQI
6AQI
In the last 24 hours,
Crescent City's AQI reached its highest point of 31 at 10 AM during the Day, while the lowest point, 6, was recorded at 10 PM during the Night between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Crescent City, California, United States
17°C15/20°C
16°C15/19°C
15°C14/17°C
15°C14/17°C
15°C13/18°C
17°C14/20°C
17°C15/18°C
15°C13/18°C
15°C13/17°C
15°C14/18°C
15°C13/17°C
16°C15/18°C
19°C15/23°C
18°C15/21°C
16°C13/21°C
18°C15/22°C
17°C15/20°C
16°C14/18°C
15°C13/16°C
15°C13/18°C
15°C12/19°C
14°C11/17°C
15°C13/17°C
15°C12/18°C
14°C11/16°C
15°C13/17°C
15°C13/15°C
15°C13/17°C
15°C14/16°C
14°C12/15°C
--°C/°C
31AQI
28AQI
36AQI
29AQI
2025 Days Vs Air Quality
Crescent City, California, United States
95%
261
5%
14
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 276 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
Crescent City, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
33AQI
38AQI
29AQI
30AQI
28AQI
27AQI
35AQI
39AQI
46AQI
31AQI
27AQI
34AQI
48AQI
57AQI
56AQI
55AQI
53AQI
57AQI
50AQI
57AQI
63AQI
55AQI
54AQI
38AQI
42AQI
47AQI
57AQI
65AQI
69AQI
45AQI
34AQI
34AQI
39AQI
36AQI
31AQI
43AQI
34AQI
38AQI
39AQI
37AQI
45AQI
50AQI
45AQI
34AQI
34AQI
37AQI
39AQI
46AQI
32AQI
30AQI
38AQI
49AQI
32AQI
34AQI
32AQI
44AQI
49AQI
49AQI
44AQI
38AQI
32AQI
37AQI
35AQI
27AQI
35AQI
40AQI
30AQI
42AQI
39AQI
35AQI
27AQI
27AQI
25AQI
29AQI
25AQI
25AQI
30AQI
29AQI
28AQI
24AQI
32AQI
34AQI
36AQI
40AQI
32AQI
31AQI
25AQI
26AQI
24AQI
24AQI
23AQI
26AQI
24AQI
24AQI
22AQI
18AQI
23AQI
25AQI
23AQI
23AQI
26AQI
29AQI
35AQI
32AQI
35AQI
38AQI
37AQI
44AQI
42AQI
32AQI
45AQI
44AQI
36AQI
26AQI
31AQI
26AQI
23AQI
24AQI
33AQI
34AQI
31AQI
22AQI
29AQI
33AQI
36AQI
32AQI
21AQI
32AQI
24AQI
24AQI
20AQI
21AQI
26AQI
25AQI
26AQI
21AQI
22AQI
24AQI
23AQI
32AQI
26AQI
24AQI
26AQI
21AQI
18AQI
28AQI
29AQI
25AQI
31AQI
34AQI
39AQI
47AQI
43AQI
34AQI
37AQI
34AQI
19AQI
19AQI
23AQI
28AQI
30AQI
37AQI
41AQI
40AQI
36AQI
28AQI
21AQI
19AQI
29AQI
32AQI
25AQI
23AQI
21AQI
23AQI
26AQI
18AQI
19AQI
20AQI
34AQI
34AQI
27AQI
25AQI
22AQI
25AQI
40AQI
34AQI
33AQI
25AQI
22AQI
28AQI
34AQI
34AQI
30AQI
26AQI
28AQI
28AQI
26AQI
27AQI
27AQI
22AQI
22AQI
23AQI
21AQI
19AQI
17AQI
17AQI
21AQI
27AQI
26AQI
27AQI
23AQI
22AQI
22AQI
27AQI
26AQI
25AQI
24AQI
25AQI
37AQI
43AQI
36AQI
25AQI
25AQI
24AQI
18AQI
23AQI
17AQI
17AQI
20AQI
21AQI
23AQI
31AQI
37AQI
29AQI
24AQI
26AQI
32AQI
28AQI
23AQI
27AQI
28AQI
23AQI
21AQI
26AQI
26AQI
38AQI
21AQI
22AQI
28AQI
27AQI
17AQI
23AQI
25AQI
22AQI
23AQI
21AQI
28AQI
36AQI
30AQI
33AQI
48AQI
37AQI
29AQI
30AQI
43AQI
52AQI
40AQI
31AQI
39AQI
60AQI
34AQI
15AQI
25AQI
21AQI
45AQI
39AQI
32AQI
30AQI
26AQI
29AQI
26AQI
26AQI
31AQI
23AQI
No. of days
202531AQI
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
October23AQI
202432AQI
Highest AQI recorded in
December49AQI
Lowest AQI recorded in
March13AQI
202352AQI
Highest AQI recorded in
September65AQI
Lowest AQI recorded in
December37AQI
202240AQI
Highest AQI recorded in
September42AQI
Lowest AQI recorded in
August27AQI
202142AQI
Highest AQI recorded in
September47AQI
Lowest AQI recorded in
July37AQI
202082AQI
Highest AQI recorded in
October111AQI
Lowest AQI recorded in
September79AQI
Most & Least Polluted Years Over the Last 6 Years
Crescent City's annual 2025 AQI (31) shows an average percentage change of -30.05% (improved AQI) compared to previous years: 2020 (82), 2021 (42), 2022 (40), 2023 (52), 2024 (32).