Wilton, 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
Wilton, 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 3rd highest AQI at 30 of Good air quality, showing improvement over 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Feb - 13th Feb 2026
Wilton, California, United States
7 AM12th Feb 2026
5 PM
6 AM13th Feb 2026
52AQI
20AQI
56AQI
8AQI
In the last 24 hours,
Wilton's AQI reached its highest point of 56 at 7 PM during the Night, while the lowest point, 8, was recorded at 4 AM during the Night between 12th Feb and 13th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Wilton, California, United States
10°C4/20°C
12°C5/19°C
11°C5/18°C
13°C9/18°C
8°C6/10°C
8°C6/10°C
9°C7/10°C
9°C7/12°C
7°C4/10°C
11°C5/22°C
7°C4/14°C
8°C2/18°C
9°C2/18°C
12°C9/18°C
10°C5/19°C
11°C6/20°C
12°C7/21°C
11°C5/21°C
10°C4/19°C
12°C6/22°C
12°C5/23°C
13°C5/24°C
14°C7/24°C
13°C6/23°C
13°C7/21°C
14°C9/22°C
12°C8/17°C
13°C12/18°C
12°C7/19°C
11°C4/21°C
50AQI
29AQI
40AQI
29AQI
2026 Days Vs Air Quality
Wilton, California, United States
80%
35
20%
9
Total number of days with different AQI categories in last 45 days in 2026 (320 days remaining)
Under WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2026, 80% of 45 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
Wilton, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI (US)
17AQI (US)
13AQI (US)
15AQI (US)
19AQI (US)
17AQI (US)
17AQI (US)
16AQI (US)
24AQI (US)
36AQI (US)
57AQI (US)
59AQI (US)
52AQI (US)
68AQI (US)
59AQI (US)
59AQI (US)
63AQI (US)
63AQI (US)
55AQI (US)
36AQI (US)
38AQI (US)
35AQI (US)
33AQI (US)
27AQI (US)
22AQI (US)
29AQI (US)
29AQI (US)
31AQI (US)
30AQI (US)
47AQI (US)
29AQI (US)
36AQI (US)
30AQI (US)
30AQI (US)
29AQI (US)
31AQI (US)
35AQI (US)
30AQI (US)
26AQI (US)
37AQI (US)
26AQI (US)
30AQI (US)
42AQI (US)
30AQI (US)
36AQI (US)
32AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
January36AQI (US)
Lowest AQI (US) recorded in
February32AQI (US)
202532AQI (US)
Highest AQI (US) recorded in
January44AQI (US)
Lowest AQI (US) recorded in
March23AQI (US)
202429AQI (US)
Highest AQI (US) recorded in
December41AQI (US)
Lowest AQI (US) recorded in
March22AQI (US)
202332AQI (US)
Highest AQI (US) recorded in
February39AQI (US)
Lowest AQI (US) recorded in
October25AQI (US)
202233AQI (US)
Highest AQI (US) recorded in
January50AQI (US)
Lowest AQI (US) recorded in
March25AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
August65AQI (US)
Lowest AQI (US) recorded in
November18AQI (US)
202046AQI (US)
Highest AQI (US) recorded in
September89AQI (US)
Lowest AQI (US) recorded in
May26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Wilton's annual 2026 AQI (US) (35) shows an average percentage change of 3.1% (worsened AQI (US)) compared to previous years: 2020 (46), 2021 (35), 2022 (33), 2023 (32), 2024 (29), 2025 (32).