Contra Costa Centre, 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
Contra Costa Centre, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Feb - 14th Feb 2026
Contra Costa Centre, California, United States
7 AM13th Feb 2026
5 PM
6 AM14th Feb 2026
62AQI
52AQI
56AQI
24AQI
In the last 24 hours,
Contra Costa Centre's AQI reached its highest point of 62 at 5 PM during the Day, while the lowest point, 24, was recorded at 4 AM during the Night between 13th Feb and 14th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Contra Costa Centre, California, United States
12°C7/18°C
11°C7/18°C
13°C9/19°C
8°C5/13°C
8°C5/12°C
8°C6/12°C
11°C5/19°C
9°C6/13°C
10°C5/19°C
8°C4/12°C
8°C5/13°C
9°C4/16°C
11°C7/17°C
11°C6/17°C
10°C6/16°C
11°C7/16°C
12°C5/21°C
13°C7/21°C
12°C5/19°C
11°C6/20°C
12°C6/21°C
15°C9/24°C
13°C7/20°C
13°C7/21°C
13°C8/19°C
10°C5/14°C
12°C10/16°C
12°C7/19°C
11°C7/19°C
11°C7/14°C
59AQI
45AQI
48AQI
44AQI
2026 Days Vs Air Quality
Contra Costa Centre, California, United States
82%
37
18%
8
Total number of days with different AQI categories in last 46 days in 2026 (319 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2026, 82% of 46 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
Contra Costa Centre, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI (US)
20AQI (US)
15AQI (US)
17AQI (US)
18AQI (US)
28AQI (US)
19AQI (US)
20AQI (US)
20AQI (US)
43AQI (US)
38AQI (US)
37AQI (US)
43AQI (US)
38AQI (US)
61AQI (US)
45AQI (US)
59AQI (US)
61AQI (US)
46AQI (US)
45AQI (US)
49AQI (US)
48AQI (US)
51AQI (US)
48AQI (US)
46AQI (US)
47AQI (US)
44AQI (US)
50AQI (US)
55AQI (US)
51AQI (US)
41AQI (US)
47AQI (US)
49AQI (US)
49AQI (US)
50AQI (US)
47AQI (US)
43AQI (US)
37AQI (US)
47AQI (US)
46AQI (US)
48AQI (US)
46AQI (US)
47AQI (US)
52AQI (US)
54AQI (US)
40AQI (US)
47AQI (US)
No. of days
202642AQI (US)
Highest AQI (US) recorded in
February47AQI (US)
Lowest AQI (US) recorded in
January40AQI (US)
202532AQI (US)
Highest AQI (US) recorded in
December49AQI (US)
Lowest AQI (US) recorded in
April22AQI (US)
202429AQI (US)
Highest AQI (US) recorded in
December41AQI (US)
Lowest AQI (US) recorded in
April15AQI (US)
202329AQI (US)
Highest AQI (US) recorded in
December35AQI (US)
Lowest AQI (US) recorded in
March24AQI (US)
202232AQI (US)
Highest AQI (US) recorded in
January44AQI (US)
Lowest AQI (US) recorded in
July22AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
August49AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202043AQI (US)
Highest AQI (US) recorded in
September76AQI (US)
Lowest AQI (US) recorded in
March27AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Contra Costa Centre's annual 2026 AQI (US) (42) shows an average percentage change of 27.8% (worsened AQI (US)) compared to previous years: 2020 (43), 2021 (35), 2022 (32), 2023 (29), 2024 (29), 2025 (32).