Chula Vista, 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
Chula Vista, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (15th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 40 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Feb - 15th Feb 2026
Chula Vista, California, United States
6 AM14th Feb 2026
5 PM
5 AM15th Feb 2026
97AQI
34AQI
27AQI
16AQI
In the last 24 hours,
Chula Vista's AQI reached its highest point of 97 at 12 PM during the Day, while the lowest point, 16, was recorded at 9 PM during the Night between 14th Feb and 15th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Chula Vista, California, United States
15°C5/25°C
20°C17/24°C
18°C11/28°C
15°C10/23°C
14°C11/19°C
14°C10/20°C
15°C12/19°C
13°C11/16°C
13°C8/22°C
16°C10/26°C
15°C9/26°C
14°C8/24°C
18°C11/29°C
20°C13/29°C
21°C14/31°C
19°C13/32°C
16°C11/24°C
17°C9/28°C
22°C14/33°C
20°C15/29°C
16°C12/21°C
15°C11/24°C
19°C11/32°C
19°C13/30°C
15°C11/19°C
14°C13/17°C
15°C11/20°C
14°C11/20°C
13°C9/19°C
14°C10/20°C
64AQI
35AQI
38AQI
32AQI
2026 Days Vs Air Quality
Chula Vista, California, United States
93%
43
7%
3
Total number of days with different AQI categories in last 47 days in 2026 (318 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2026, 93% of 47 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
Chula Vista, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
27AQI (US)
19AQI (US)
13AQI (US)
20AQI (US)
36AQI (US)
31AQI (US)
32AQI (US)
23AQI (US)
20AQI (US)
26AQI (US)
29AQI (US)
34AQI (US)
46AQI (US)
37AQI (US)
47AQI (US)
39AQI (US)
35AQI (US)
48AQI (US)
57AQI (US)
83AQI (US)
56AQI (US)
38AQI (US)
24AQI (US)
31AQI (US)
33AQI (US)
26AQI (US)
42AQI (US)
44AQI (US)
50AQI (US)
36AQI (US)
44AQI (US)
48AQI (US)
50AQI (US)
43AQI (US)
45AQI (US)
45AQI (US)
37AQI (US)
38AQI (US)
41AQI (US)
47AQI (US)
24AQI (US)
22AQI (US)
34AQI (US)
43AQI (US)
40AQI (US)
36AQI (US)
40AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
February40AQI (US)
Lowest AQI (US) recorded in
January36AQI (US)
202551AQI (US)
Highest AQI (US) recorded in
December60AQI (US)
Lowest AQI (US) recorded in
April41AQI (US)
202452AQI (US)
Highest AQI (US) recorded in
October63AQI (US)
Lowest AQI (US) recorded in
March41AQI (US)
202390AQI (US)
Highest AQI (US) recorded in
January241AQI (US)
Lowest AQI (US) recorded in
May45AQI (US)
202274AQI (US)
Highest AQI (US) recorded in
September204AQI (US)
Lowest AQI (US) recorded in
July40AQI (US)
202149AQI (US)
Highest AQI (US) recorded in
September65AQI (US)
Lowest AQI (US) recorded in
January39AQI (US)
202052AQI (US)
Highest AQI (US) recorded in
September80AQI (US)
Lowest AQI (US) recorded in
March35AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Chula Vista's annual 2026 AQI (US) (37) shows an average percentage change of -36.4% (improved AQI (US)) compared to previous years: 2020 (52), 2021 (49), 2022 (74), 2023 (90), 2024 (52), 2025 (51).