Lake Gregory, Crestline, 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
Lake Gregory, Crestline, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (19th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Oct - 20th Oct 2025
Lake Gregory, Crestline, California, United States
6 AM19th Oct 2025
6 PM
5 AM20th Oct 2025
63AQI
16AQI
58AQI
20AQI
In the last 24 hours,
Lake Gregory's AQI reached its highest point of 63 at 10 AM during the Day, while the lowest point, 16, was recorded at 2 PM during the Day between 19th Oct and 20th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Lake Gregory, Crestline, California, United States
--°C/°C
24°C14/31°C
26°C19/36°C
29°C21/41°C
27°C20/36°C
24°C18/33°C
20°C17/28°C
21°C18/30°C
22°C17/30°C
22°C15/31°C
21°C16/29°C
21°C14/31°C
22°C14/32°C
19°C14/27°C
19°C12/29°C
21°C13/32°C
20°C12/32°C
21°C14/33°C
20°C13/31°C
22°C14/32°C
26°C19/37°C
24°C17/33°C
21°C12/33°C
16°C13/20°C
14°C12/17°C
15°C11/22°C
18°C10/29°C
21°C15/31°C
22°C15/32°C
23°C17/33°C
22°C15/33°C
39AQI
33AQI
40AQI
33AQI
2025 Days Vs Air Quality
Lake Gregory, Crestline, California, United States
85%
249
15%
43
Total number of days with different AQI categories in last 294 days in 2025 (71 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 294 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
Lake Gregory, Crestline, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
60AQI
45AQI
46AQI
45AQI
44AQI
44AQI
48AQI
52AQI
50AQI
60AQI
54AQI
38AQI
42AQI
40AQI
52AQI
56AQI
56AQI
64AQI
63AQI
53AQI
38AQI
44AQI
38AQI
48AQI
61AQI
41AQI
39AQI
55AQI
58AQI
67AQI
56AQI
62AQI
55AQI
41AQI
48AQI
32AQI
30AQI
33AQI
36AQI
47AQI
42AQI
40AQI
36AQI
24AQI
24AQI
24AQI
25AQI
32AQI
24AQI
30AQI
27AQI
18AQI
19AQI
25AQI
20AQI
19AQI
23AQI
26AQI
26AQI
26AQI
24AQI
26AQI
22AQI
24AQI
25AQI
23AQI
20AQI
28AQI
24AQI
21AQI
18AQI
23AQI
33AQI
30AQI
42AQI
38AQI
37AQI
27AQI
37AQI
37AQI
46AQI
33AQI
29AQI
29AQI
33AQI
46AQI
35AQI
38AQI
38AQI
32AQI
42AQI
37AQI
35AQI
29AQI
28AQI
29AQI
28AQI
32AQI
34AQI
35AQI
37AQI
34AQI
38AQI
42AQI
41AQI
37AQI
44AQI
59AQI
44AQI
48AQI
36AQI
40AQI
48AQI
43AQI
39AQI
26AQI
33AQI
34AQI
36AQI
37AQI
36AQI
31AQI
38AQI
26AQI
26AQI
35AQI
24AQI
41AQI
37AQI
31AQI
24AQI
35AQI
38AQI
48AQI
38AQI
43AQI
38AQI
37AQI
45AQI
41AQI
44AQI
50AQI
48AQI
44AQI
46AQI
42AQI
40AQI
43AQI
45AQI
43AQI
61AQI
35AQI
47AQI
29AQI
41AQI
44AQI
40AQI
38AQI
44AQI
38AQI
41AQI
44AQI
43AQI
44AQI
44AQI
42AQI
51AQI
47AQI
54AQI
56AQI
56AQI
56AQI
53AQI
51AQI
50AQI
47AQI
43AQI
43AQI
49AQI
48AQI
43AQI
40AQI
38AQI
37AQI
42AQI
52AQI
47AQI
43AQI
42AQI
35AQI
39AQI
55AQI
58AQI
58AQI
54AQI
56AQI
50AQI
45AQI
37AQI
38AQI
36AQI
41AQI
40AQI
30AQI
32AQI
26AQI
25AQI
28AQI
34AQI
34AQI
29AQI
33AQI
31AQI
28AQI
48AQI
56AQI
57AQI
58AQI
44AQI
43AQI
36AQI
45AQI
51AQI
54AQI
59AQI
53AQI
48AQI
45AQI
35AQI
29AQI
37AQI
40AQI
34AQI
47AQI
42AQI
43AQI
40AQI
42AQI
38AQI
30AQI
37AQI
49AQI
50AQI
36AQI
30AQI
28AQI
38AQI
37AQI
31AQI
35AQI
39AQI
33AQI
33AQI
30AQI
32AQI
32AQI
44AQI
39AQI
37AQI
28AQI
27AQI
28AQI
23AQI
24AQI
22AQI
28AQI
28AQI
31AQI
29AQI
29AQI
29AQI
31AQI
33AQI
47AQI
48AQI
38AQI
37AQI
49AQI
48AQI
53AQI
54AQI
53AQI
47AQI
46AQI
45AQI
52AQI
31AQI
20AQI
39AQI
37AQI
41AQI
49AQI
50AQI
32AQI
30AQI
38AQI
39AQI
45AQI
40AQI
44AQI
31AQI
44AQI
No. of days
202539AQI
Highest AQI recorded in
January50AQI
Lowest AQI recorded in
March30AQI
202443AQI
Highest AQI recorded in
July58AQI
Lowest AQI recorded in
November30AQI
202342AQI
Highest AQI recorded in
July57AQI
Lowest AQI recorded in
January33AQI
202242AQI
Highest AQI recorded in
June51AQI
Lowest AQI recorded in
October35AQI
202145AQI
Highest AQI recorded in
June54AQI
Lowest AQI recorded in
January36AQI
202044AQI
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
March28AQI
Most & Least Polluted Years Over the Last 6 Years
Lake Gregory's annual 2025 AQI (39) shows an average percentage change of -8.8% (improved AQI) compared to previous years: 2020 (44), 2021 (45), 2022 (42), 2023 (42), 2024 (43).