Winters, 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
Winters, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (7th February):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 31 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Feb - 7th Feb 2026
Winters, California, United States
7 AM6th Feb 2026
5 PM
6 AM7th Feb 2026
64AQI
23AQI
51AQI
21AQI
In the last 24 hours,
Winters's AQI reached its highest point of 64 at 11 AM during the Day, while the lowest point, 21, was recorded at 6 AM during the Night between 6th Feb and 7th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Winters, California, United States
9°C5/15°C
8°C4/15°C
9°C4/17°C
9°C3/17°C
9°C1/18°C
9°C1/18°C
11°C3/20°C
13°C8/19°C
11°C7/17°C
12°C10/18°C
8°C3/15°C
9°C5/16°C
9°C6/11°C
10°C5/17°C
9°C7/14°C
11°C6/20°C
6°C0/12°C
8°C2/16°C
9°C1/17°C
11°C8/17°C
11°C5/19°C
11°C4/19°C
12°C7/20°C
12°C4/21°C
14°C9/24°C
12°C4/22°C
13°C2/22°C
14°C5/23°C
15°C8/23°C
14°C6/23°C
50AQI
37AQI
46AQI
39AQI
2026 Days Vs Air Quality
Winters, California, United States
79%
30
21%
8
Total number of days with different AQI categories in last 40 days in 2026 (325 days remaining)
Under WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2026, 79% of 40 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
Winters, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI (US)
21AQI (US)
22AQI (US)
18AQI (US)
25AQI (US)
24AQI (US)
28AQI (US)
20AQI (US)
20AQI (US)
42AQI (US)
48AQI (US)
54AQI (US)
52AQI (US)
62AQI (US)
66AQI (US)
67AQI (US)
68AQI (US)
59AQI (US)
52AQI (US)
40AQI (US)
39AQI (US)
40AQI (US)
40AQI (US)
35AQI (US)
30AQI (US)
32AQI (US)
29AQI (US)
34AQI (US)
43AQI (US)
45AQI (US)
29AQI (US)
34AQI (US)
31AQI (US)
31AQI (US)
31AQI (US)
33AQI (US)
36AQI (US)
31AQI (US)
39AQI (US)
32AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
January39AQI (US)
Lowest AQI (US) recorded in
February32AQI (US)
202533AQI (US)
Highest AQI (US) recorded in
December46AQI (US)
Lowest AQI (US) recorded in
March22AQI (US)
202435AQI (US)
Highest AQI (US) recorded in
March67AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202345AQI (US)
Highest AQI (US) recorded in
November52AQI (US)
Lowest AQI (US) recorded in
December45AQI (US)
202298AQI (US)
Highest AQI (US) recorded in
September100AQI (US)
Lowest AQI (US) recorded in
August84AQI (US)
202187AQI (US)
Highest AQI (US) recorded in
September87AQI (US)
Lowest AQI (US) recorded in
September87AQI (US)
202093AQI (US)
Highest AQI (US) recorded in
August114AQI (US)
Lowest AQI (US) recorded in
November17AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Winters's annual 2026 AQI (US) (38) shows an average percentage change of -28.1% (improved AQI (US)) compared to previous years: 2020 (93), 2021 (87), 2022 (98), 2023 (45), 2024 (35), 2025 (33).