North Market Boulevard, Chehalis, 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
North Market Boulevard, Chehalis, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 1 years varied significantly: 2025 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: 3rd Oct - 4th Oct 2025
North Market Boulevard, Chehalis, Washington, United States
6 AM3rd Oct 2025
7 PM
5 AM4th Oct 2025
57AQI
19AQI
34AQI
15AQI
In the last 24 hours,
North Market Boulevard's AQI reached its highest point of 57 at 2 PM during the Day, while the lowest point, 15, was recorded at 8 PM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
North Market Boulevard, Chehalis, Washington, United States
21°C14/30°C
18°C14/24°C
17°C14/20°C
17°C15/20°C
18°C14/23°C
18°C13/22°C
19°C15/25°C
16°C14/19°C
17°C14/21°C
17°C9/23°C
15°C13/18°C
17°C11/24°C
21°C12/31°C
17°C12/24°C
17°C11/24°C
18°C10/27°C
15°C8/22°C
16°C12/21°C
16°C10/26°C
18°C8/28°C
18°C10/28°C
14°C8/21°C
15°C8/25°C
18°C11/27°C
17°C9/26°C
16°C14/18°C
14°C11/22°C
15°C12/19°C
15°C12/21°C
14°C10/19°C
--°C/°C
30AQI
25AQI
30AQI
27AQI
2025 Days Vs Air Quality
North Market Boulevard, Chehalis, Washington, United States
99%
190
1%
2
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 99%
Health Risk Level:
Very Low
In 2025, 99% of 277 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
North Market Boulevard, Chehalis, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
16AQI
16AQI
15AQI
21AQI
16AQI
17AQI
19AQI
20AQI
24AQI
27AQI
22AQI
16AQI
13AQI
14AQI
18AQI
16AQI
20AQI
20AQI
20AQI
19AQI
22AQI
20AQI
21AQI
18AQI
16AQI
14AQI
18AQI
20AQI
26AQI
35AQI
30AQI
22AQI
13AQI
13AQI
15AQI
26AQI
21AQI
13AQI
15AQI
15AQI
18AQI
16AQI
19AQI
18AQI
18AQI
15AQI
16AQI
19AQI
19AQI
18AQI
17AQI
16AQI
13AQI
15AQI
11AQI
12AQI
14AQI
14AQI
13AQI
13AQI
13AQI
15AQI
19AQI
13AQI
16AQI
16AQI
19AQI
20AQI
23AQI
14AQI
15AQI
17AQI
19AQI
23AQI
28AQI
38AQI
34AQI
28AQI
19AQI
18AQI
19AQI
17AQI
16AQI
14AQI
15AQI
15AQI
11AQI
11AQI
17AQI
29AQI
29AQI
14AQI
13AQI
12AQI
17AQI
18AQI
17AQI
14AQI
13AQI
16AQI
20AQI
18AQI
19AQI
22AQI
16AQI
17AQI
20AQI
21AQI
28AQI
17AQI
21AQI
23AQI
30AQI
25AQI
21AQI
18AQI
21AQI
19AQI
18AQI
16AQI
16AQI
19AQI
21AQI
21AQI
21AQI
21AQI
19AQI
18AQI
17AQI
21AQI
29AQI
25AQI
20AQI
18AQI
19AQI
20AQI
22AQI
25AQI
27AQI
25AQI
22AQI
19AQI
17AQI
21AQI
23AQI
25AQI
23AQI
24AQI
28AQI
32AQI
35AQI
35AQI
39AQI
34AQI
32AQI
32AQI
32AQI
36AQI
30AQI
35AQI
55AQI
36AQI
47AQI
39AQI
32AQI
29AQI
33AQI
37AQI
33AQI
21AQI
32AQI
21AQI
20AQI
23AQI
28AQI
24AQI
28AQI
42AQI
22AQI
22AQI
33AQI
51AQI
22AQI
22AQI
19AQI
16AQI
22AQI
15AQI
14AQI
18AQI
26AQI
17AQI
20AQI
16AQI
19AQI
20AQI
26AQI
30AQI
19AQI
No. of days
202521AQI
Highest AQI recorded in
September30AQI
Lowest AQI recorded in
May16AQI
Most & Least Polluted Years Over the Last 1 Years
North Market Boulevard's annual 2025 AQI (21) shows an average percentage change of NaN% (improved AQI) compared to previous years: .