4Th St, Aberdeen, 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
4Th St, Aberdeen, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 38 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Oct - 18th Oct 2025
4Th St, Aberdeen, Washington, United States
7 AM17th Oct 2025
6 PM
6 AM18th Oct 2025
49AQI
12AQI
60AQI
41AQI
In the last 24 hours,
4Th St's AQI reached its highest point of 60 at 1 AM during the Night, while the lowest point, 12, was recorded at 7 AM during the Day between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
4Th St, Aberdeen, Washington, United States
16°C12/20°C
14°C7/22°C
13°C10/16°C
16°C12/19°C
16°C11/23°C
18°C10/27°C
16°C10/22°C
13°C8/18°C
14°C9/21°C
17°C12/23°C
16°C12/20°C
15°C12/16°C
13°C10/18°C
15°C12/19°C
15°C12/19°C
14°C10/18°C
15°C12/18°C
14°C8/21°C
15°C6/24°C
15°C9/24°C
12°C7/17°C
12°C6/19°C
13°C8/17°C
11°C7/15°C
11°C7/13°C
10°C4/18°C
10°C3/18°C
10°C2/19°C
9°C3/14°C
12°C8/16°C
--°C/°C
31AQI
27AQI
35AQI
28AQI
2025 Days Vs Air Quality
4Th St, Aberdeen, Washington, United States
100%
290
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 291 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
4Th St, Aberdeen, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
21AQI
20AQI
19AQI
20AQI
19AQI
23AQI
22AQI
21AQI
24AQI
20AQI
23AQI
26AQI
33AQI
30AQI
27AQI
26AQI
28AQI
32AQI
31AQI
36AQI
35AQI
39AQI
34AQI
30AQI
32AQI
35AQI
37AQI
41AQI
40AQI
24AQI
18AQI
22AQI
23AQI
24AQI
21AQI
22AQI
23AQI
24AQI
25AQI
24AQI
26AQI
28AQI
23AQI
25AQI
25AQI
20AQI
24AQI
22AQI
21AQI
20AQI
22AQI
21AQI
17AQI
20AQI
19AQI
24AQI
30AQI
25AQI
30AQI
22AQI
18AQI
20AQI
19AQI
19AQI
20AQI
19AQI
21AQI
18AQI
18AQI
18AQI
18AQI
17AQI
16AQI
16AQI
17AQI
16AQI
19AQI
14AQI
17AQI
16AQI
16AQI
16AQI
21AQI
20AQI
16AQI
16AQI
15AQI
16AQI
16AQI
17AQI
17AQI
17AQI
17AQI
19AQI
15AQI
14AQI
14AQI
14AQI
16AQI
16AQI
17AQI
17AQI
20AQI
20AQI
21AQI
20AQI
20AQI
17AQI
15AQI
13AQI
13AQI
14AQI
19AQI
21AQI
19AQI
15AQI
13AQI
13AQI
13AQI
17AQI
18AQI
13AQI
14AQI
14AQI
16AQI
15AQI
15AQI
15AQI
15AQI
14AQI
15AQI
18AQI
16AQI
16AQI
13AQI
12AQI
13AQI
14AQI
11AQI
13AQI
13AQI
13AQI
13AQI
13AQI
13AQI
14AQI
14AQI
13AQI
16AQI
14AQI
15AQI
17AQI
18AQI
14AQI
15AQI
19AQI
18AQI
18AQI
22AQI
26AQI
24AQI
22AQI
17AQI
17AQI
17AQI
16AQI
16AQI
14AQI
15AQI
15AQI
11AQI
11AQI
15AQI
21AQI
24AQI
14AQI
13AQI
12AQI
15AQI
18AQI
16AQI
14AQI
15AQI
17AQI
18AQI
17AQI
18AQI
18AQI
16AQI
15AQI
17AQI
18AQI
23AQI
17AQI
19AQI
22AQI
22AQI
21AQI
19AQI
18AQI
19AQI
17AQI
16AQI
16AQI
16AQI
17AQI
18AQI
18AQI
18AQI
17AQI
17AQI
17AQI
17AQI
21AQI
26AQI
23AQI
19AQI
17AQI
18AQI
18AQI
20AQI
26AQI
27AQI
23AQI
19AQI
15AQI
13AQI
16AQI
20AQI
21AQI
18AQI
21AQI
24AQI
28AQI
29AQI
32AQI
31AQI
27AQI
27AQI
26AQI
26AQI
29AQI
25AQI
30AQI
41AQI
28AQI
34AQI
29AQI
28AQI
29AQI
29AQI
33AQI
29AQI
22AQI
24AQI
18AQI
20AQI
21AQI
26AQI
21AQI
21AQI
20AQI
19AQI
17AQI
22AQI
29AQI
18AQI
21AQI
18AQI
16AQI
19AQI
14AQI
24AQI
28AQI
39AQI
40AQI
45AQI
48AQI
47AQI
45AQI
47AQI
45AQI
36AQI
42AQI
28AQI
33AQI
46AQI
45AQI
38AQI
28AQI
23AQI
18AQI
17AQI
14AQI
17AQI
18AQI
22AQI
24AQI
40AQI
No. of days
202521AQI
Highest AQI recorded in
October40AQI
Lowest AQI recorded in
May14AQI
202415AQI
Highest AQI recorded in
December25AQI
Lowest AQI recorded in
May11AQI
202318AQI
Highest AQI recorded in
August25AQI
Lowest AQI recorded in
April11AQI
202220AQI
Highest AQI recorded in
October33AQI
Lowest AQI recorded in
May11AQI
202117AQI
Highest AQI recorded in
April22AQI
Lowest AQI recorded in
December9AQI
202044AQI
Highest AQI recorded in
September82AQI
Lowest AQI recorded in
August12AQI
Most & Least Polluted Years Over the Last 6 Years
4Th St's annual 2025 AQI (21) shows an average percentage change of 7.3% (worsened AQI) compared to previous years: 2020 (44), 2021 (17), 2022 (20), 2023 (18), 2024 (15).