San Antonio Northwest, Leon Valley, Texas, 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
San Antonio Northwest, Leon Valley, Texas, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th 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 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Feb - 14th Feb 2026
San Antonio Northwest, Leon Valley, Texas, United States
7 AM13th Feb 2026
6 PM
6 AM14th Feb 2026
83AQI
17AQI
68AQI
11AQI
In the last 24 hours,
San Antonio Northwest's AQI reached its highest point of 83 at 8 AM during the Day, while the lowest point, 11, was recorded at 6 AM during the Night between 13th Feb and 14th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
San Antonio Northwest, Leon Valley, Texas, United States
14°C6/23°C
9°C7/10°C
7°C2/15°C
11°C0/19°C
13°C7/19°C
17°C11/23°C
16°C10/23°C
18°C15/21°C
4°C-1/5°C
-3°C-5/0°C
-2°C-7/5°C
3°C-6/13°C
8°C-1/20°C
10°C1/22°C
11°C6/19°C
6°C1/13°C
5°C-3/14°C
10°C2/19°C
17°C13/23°C
15°C9/22°C
12°C1/24°C
16°C5/29°C
18°C7/30°C
17°C9/29°C
19°C10/31°C
18°C15/23°C
19°C13/27°C
19°C12/26°C
20°C15/26°C
21°C19/25°C
60AQI
31AQI
59AQI
32AQI
2026 Days Vs Air Quality
San Antonio Northwest, Leon Valley, Texas, United States
87%
39
13%
6
Total number of days with different AQI categories in last 46 days in 2026 (319 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% 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
San Antonio Northwest, Leon Valley, Texas, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
81AQI (US)
34AQI (US)
32AQI (US)
39AQI (US)
46AQI (US)
53AQI (US)
59AQI (US)
39AQI (US)
69AQI (US)
30AQI (US)
17AQI (US)
32AQI (US)
21AQI (US)
23AQI (US)
23AQI (US)
30AQI (US)
45AQI (US)
30AQI (US)
45AQI (US)
31AQI (US)
33AQI (US)
52AQI (US)
46AQI (US)
46AQI (US)
53AQI (US)
49AQI (US)
33AQI (US)
47AQI (US)
47AQI (US)
48AQI (US)
36AQI (US)
46AQI (US)
46AQI (US)
42AQI (US)
32AQI (US)
42AQI (US)
41AQI (US)
36AQI (US)
39AQI (US)
42AQI (US)
37AQI (US)
27AQI (US)
40AQI (US)
38AQI (US)
40AQI (US)
41AQI (US)
39AQI (US)
No. of days
202640AQI (US)
Highest AQI (US) recorded in
January41AQI (US)
Lowest AQI (US) recorded in
February39AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
May49AQI (US)
Lowest AQI (US) recorded in
January34AQI (US)
202441AQI (US)
Highest AQI (US) recorded in
May72AQI (US)
Lowest AQI (US) recorded in
January33AQI (US)
202340AQI (US)
Highest AQI (US) recorded in
June50AQI (US)
Lowest AQI (US) recorded in
October28AQI (US)
202238AQI (US)
Highest AQI (US) recorded in
June48AQI (US)
Lowest AQI (US) recorded in
August25AQI (US)
202138AQI (US)
Highest AQI (US) recorded in
September44AQI (US)
Lowest AQI (US) recorded in
November30AQI (US)
202037AQI (US)
Highest AQI (US) recorded in
March43AQI (US)
Lowest AQI (US) recorded in
December30AQI (US)
Most & Least Polluted Years Over the Last 7 Years
San Antonio Northwest's annual 2026 AQI (US) (40) shows an average percentage change of 2.7% (worsened AQI (US)) compared to previous years: 2020 (37), 2021 (38), 2022 (38), 2023 (40), 2024 (41), 2025 (42).