South 2nd Street, Mount Vernon, Washington, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
South 2nd Street, Mount Vernon, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (24th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 20 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 24th Oct - 25th Oct 2025
South 2nd Street, Mount Vernon, Washington, United States
7 AM24th Oct 2025
6 PM
6 AM25th Oct 2025
29AQI
11AQI
24AQI
12AQI
In the last 24 hours,
South 2nd Street's AQI reached its highest point of 29 at 2 PM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 24th Oct and 25th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
South 2nd Street, Mount Vernon, Washington, United States
12°C9/18°C
15°C11/22°C
17°C13/23°C
17°C12/25°C
16°C13/20°C
16°C12/23°C
15°C13/20°C
17°C13/23°C
12°C8/16°C
12°C8/17°C
13°C8/19°C
12°C6/19°C
13°C7/22°C
11°C8/17°C
12°C9/18°C
12°C9/15°C
11°C9/12°C
10°C8/12°C
10°C5/17°C
9°C4/15°C
8°C3/15°C
9°C3/16°C
12°C7/17°C
9°C6/13°C
10°C8/14°C
11°C8/15°C
11°C7/17°C
11°C7/17°C
13°C9/19°C
12°C9/15°C
--°C/°C
37AQI
35AQI
36AQI
36AQI
2025 Days Vs Air Quality
South 2nd Street, Mount Vernon, Washington, United States
99%
211
0.9%
2
Total number of days with different AQI categories in last 298 days in 2025 (67 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 298 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
South 2nd Street, Mount Vernon, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
18AQI
17AQI
15AQI
17AQI
20AQI
18AQI
18AQI
18AQI
18AQI
18AQI
16AQI
13AQI
12AQI
13AQI
15AQI
16AQI
15AQI
17AQI
17AQI
17AQI
17AQI
17AQI
20AQI
19AQI
22AQI
21AQI
13AQI
13AQI
18AQI
22AQI
23AQI
20AQI
16AQI
13AQI
13AQI
17AQI
21AQI
13AQI
14AQI
13AQI
16AQI
15AQI
14AQI
15AQI
16AQI
15AQI
14AQI
15AQI
15AQI
16AQI
13AQI
13AQI
12AQI
13AQI
11AQI
12AQI
12AQI
12AQI
12AQI
13AQI
14AQI
14AQI
15AQI
13AQI
14AQI
15AQI
14AQI
14AQI
15AQI
15AQI
15AQI
16AQI
17AQI
17AQI
17AQI
19AQI
25AQI
24AQI
18AQI
17AQI
17AQI
16AQI
16AQI
14AQI
15AQI
14AQI
11AQI
12AQI
18AQI
23AQI
18AQI
13AQI
13AQI
13AQI
16AQI
17AQI
16AQI
14AQI
15AQI
16AQI
17AQI
16AQI
18AQI
18AQI
15AQI
16AQI
17AQI
17AQI
17AQI
17AQI
18AQI
22AQI
24AQI
23AQI
20AQI
18AQI
19AQI
18AQI
17AQI
17AQI
16AQI
17AQI
19AQI
19AQI
19AQI
19AQI
18AQI
18AQI
19AQI
22AQI
28AQI
29AQI
25AQI
16AQI
17AQI
18AQI
20AQI
23AQI
23AQI
22AQI
20AQI
16AQI
13AQI
16AQI
19AQI
19AQI
18AQI
21AQI
24AQI
26AQI
34AQI
42AQI
39AQI
36AQI
28AQI
35AQI
28AQI
33AQI
29AQI
31AQI
45AQI
26AQI
38AQI
31AQI
25AQI
25AQI
28AQI
32AQI
27AQI
20AQI
23AQI
24AQI
19AQI
23AQI
30AQI
21AQI
23AQI
22AQI
20AQI
19AQI
25AQI
25AQI
15AQI
19AQI
18AQI
24AQI
17AQI
15AQI
27AQI
40AQI
47AQI
50AQI
50AQI
47AQI
47AQI
48AQI
50AQI
50AQI
50AQI
50AQI
47AQI
48AQI
49AQI
50AQI
53AQI
54AQI
37AQI
22AQI
22AQI
18AQI
21AQI
20AQI
18AQI
17AQI
14AQI
16AQI
18AQI
24AQI
25AQI
42AQI
No. of days
202521AQI
Highest AQI recorded in
October42AQI
Lowest AQI recorded in
May14AQI
Most & Least Polluted Years Over the Last 1 Years
South 2nd Street's annual 2025 AQI (21) shows an average percentage change of NaN% (improved AQI) compared to previous years: .