San Martin, California, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
San Martin, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (5th March):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 26 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Mar - 5th Mar 2026
San Martin, California, United States
6 AM4th Mar 2026
5 PM
5 AM5th Mar 2026
50AQI
25AQI
50AQI
18AQI
In the last 24 hours,
San Martin's AQI reached its highest point of 50 at 8 AM during the Day, while the lowest point, 18, was recorded at 5 AM during the Night between 4th Mar and 5th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
San Martin, California, United States
17°C12/26°C
19°C15/28°C
17°C12/22°C
14°C9/22°C
15°C11/22°C
14°C9/21°C
13°C11/18°C
11°C10/12°C
11°C8/16°C
11°C8/15°C
9°C7/12°C
11°C9/14°C
9°C6/10°C
6°C4/9°C
5°C2/8°C
6°C5/8°C
7°C3/12°C
9°C4/15°C
11°C7/17°C
15°C10/21°C
16°C13/20°C
16°C13/21°C
18°C13/25°C
20°C15/27°C
21°C17/27°C
14°C11/20°C
13°C9/17°C
14°C9/22°C
12°C8/18°C
12°C6/20°C
60AQI
32AQI
36AQI
28AQI
2026 Days Vs Air Quality
San Martin, California, United States
97%
62
3%
2
Total number of days with different AQI categories in last 65 days in 2026 (300 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 65 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
San Martin, California, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI (US)
13AQI (US)
14AQI (US)
12AQI (US)
23AQI (US)
17AQI (US)
27AQI (US)
17AQI (US)
20AQI (US)
31AQI (US)
33AQI (US)
34AQI (US)
39AQI (US)
40AQI (US)
42AQI (US)
36AQI (US)
38AQI (US)
38AQI (US)
33AQI (US)
29AQI (US)
35AQI (US)
43AQI (US)
41AQI (US)
28AQI (US)
34AQI (US)
37AQI (US)
36AQI (US)
40AQI (US)
49AQI (US)
45AQI (US)
34AQI (US)
35AQI (US)
29AQI (US)
36AQI (US)
32AQI (US)
32AQI (US)
35AQI (US)
30AQI (US)
25AQI (US)
36AQI (US)
41AQI (US)
39AQI (US)
36AQI (US)
38AQI (US)
46AQI (US)
39AQI (US)
45AQI (US)
51AQI (US)
41AQI (US)
41AQI (US)
37AQI (US)
32AQI (US)
38AQI (US)
39AQI (US)
45AQI (US)
41AQI (US)
29AQI (US)
29AQI (US)
34AQI (US)
37AQI (US)
52AQI (US)
35AQI (US)
40AQI (US)
26AQI (US)
32AQI (US)
37AQI (US)
38AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
March38AQI (US)
Lowest AQI (US) recorded in
January32AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
June44AQI (US)
Lowest AQI (US) recorded in
March25AQI (US)
Most & Least Polluted Years Over the Last 2 Years
San Martin's annual 2026 AQI (US) (35) shows an average percentage change of -9.2% (improved AQI (US)) compared to previous years: 2025 (38).