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!
February Air Quality Analysis
Crestline, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (13th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 29 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Feb - 13th Feb 2026
Crestline, California, United States
6 AM12th Feb 2026
5 PM
5 AM13th Feb 2026
42AQI
12AQI
34AQI
19AQI
In the last 24 hours,
Crestline's AQI reached its highest point of 42 at 5 PM during the Day, while the lowest point, 12, was recorded at 7 AM during the Day between 12th Feb and 13th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Crestline, California, United States
17°C7/25°C
14°C7/26°C
13°C5/25°C
13°C7/16°C
18°C12/28°C
18°C13/27°C
16°C11/25°C
14°C10/19°C
14°C10/21°C
14°C9/22°C
13°C6/21°C
15°C9/24°C
15°C8/24°C
16°C11/25°C
17°C12/28°C
19°C13/29°C
20°C14/29°C
20°C14/30°C
18°C13/28°C
19°C11/30°C
22°C15/32°C
20°C14/30°C
17°C12/25°C
18°C11/29°C
21°C15/30°C
20°C15/29°C
17°C12/24°C
13°C10/13°C
13°C9/18°C
15°C10/25°C
52AQI
27AQI
39AQI
26AQI
2026 Days Vs Air Quality
Crestline, California, United States
100%
44
Total number of days with different AQI categories in last 45 days in 2026 (320 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2026, 100% of 45 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
Crestline, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI (US)
27AQI (US)
16AQI (US)
21AQI (US)
18AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
26AQI (US)
25AQI (US)
26AQI (US)
29AQI (US)
30AQI (US)
28AQI (US)
34AQI (US)
39AQI (US)
33AQI (US)
39AQI (US)
50AQI (US)
39AQI (US)
31AQI (US)
28AQI (US)
33AQI (US)
32AQI (US)
40AQI (US)
40AQI (US)
42AQI (US)
33AQI (US)
43AQI (US)
44AQI (US)
42AQI (US)
36AQI (US)
41AQI (US)
38AQI (US)
33AQI (US)
29AQI (US)
38AQI (US)
44AQI (US)
32AQI (US)
22AQI (US)
29AQI (US)
30AQI (US)
36AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
February36AQI (US)
Lowest AQI (US) recorded in
January30AQI (US)
202539AQI (US)
Highest AQI (US) recorded in
January50AQI (US)
Lowest AQI (US) recorded in
March31AQI (US)
202443AQI (US)
Highest AQI (US) recorded in
July58AQI (US)
Lowest AQI (US) recorded in
November30AQI (US)
202342AQI (US)
Highest AQI (US) recorded in
July57AQI (US)
Lowest AQI (US) recorded in
January33AQI (US)
202242AQI (US)
Highest AQI (US) recorded in
June51AQI (US)
Lowest AQI (US) recorded in
October35AQI (US)
202145AQI (US)
Highest AQI (US) recorded in
June54AQI (US)
Lowest AQI (US) recorded in
January36AQI (US)
202044AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
March28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Crestline's annual 2026 AQI (US) (32) shows an average percentage change of -25.2% (improved AQI (US)) compared to previous years: 2020 (44), 2021 (45), 2022 (42), 2023 (42), 2024 (43), 2025 (39).