Roosevelt, Bellingham, 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
Roosevelt, Bellingham, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (9th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 9th Oct - 10th Oct 2025
Roosevelt, Bellingham, Washington, United States
7 AM9th Oct 2025
7 PM
6 AM10th Oct 2025
65AQI
41AQI
56AQI
39AQI
In the last 24 hours,
Roosevelt's AQI reached its highest point of 65 at 12 PM during the Day, while the lowest point, 39, was recorded at 7 PM during the Night between 9th Oct and 10th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Roosevelt, Bellingham, Washington, United States
--°C/°C
15°C13/17°C
15°C14/16°C
16°C12/20°C
14°C12/16°C
15°C11/20°C
20°C11/29°C
18°C13/21°C
14°C11/19°C
13°C8/19°C
16°C11/22°C
16°C11/22°C
15°C10/23°C
17°C9/25°C
16°C10/21°C
13°C9/19°C
16°C12/22°C
17°C13/24°C
16°C12/23°C
17°C13/21°C
16°C12/22°C
16°C13/22°C
17°C14/22°C
12°C8/16°C
12°C9/15°C
13°C8/21°C
13°C6/21°C
13°C7/19°C
12°C8/17°C
12°C9/17°C
12°C9/15°C
30AQI
27AQI
31AQI
28AQI
2025 Days Vs Air Quality
Roosevelt, Bellingham, Washington, United States
97%
192
3%
6
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 284 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
Roosevelt, Bellingham, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
17AQI
16AQI
18AQI
21AQI
18AQI
17AQI
24AQI
18AQI
24AQI
28AQI
31AQI
16AQI
16AQI
17AQI
17AQI
19AQI
19AQI
19AQI
28AQI
19AQI
20AQI
19AQI
20AQI
21AQI
22AQI
16AQI
20AQI
17AQI
32AQI
37AQI
36AQI
38AQI
26AQI
15AQI
18AQI
25AQI
34AQI
16AQI
18AQI
19AQI
16AQI
20AQI
18AQI
20AQI
27AQI
23AQI
19AQI
27AQI
20AQI
25AQI
16AQI
22AQI
17AQI
19AQI
13AQI
15AQI
16AQI
16AQI
21AQI
20AQI
19AQI
17AQI
24AQI
19AQI
21AQI
25AQI
20AQI
22AQI
22AQI
18AQI
23AQI
21AQI
21AQI
21AQI
28AQI
32AQI
37AQI
43AQI
29AQI
27AQI
23AQI
21AQI
20AQI
21AQI
17AQI
17AQI
12AQI
14AQI
27AQI
34AQI
26AQI
17AQI
17AQI
18AQI
23AQI
22AQI
21AQI
17AQI
19AQI
19AQI
23AQI
22AQI
21AQI
19AQI
16AQI
19AQI
22AQI
20AQI
22AQI
23AQI
25AQI
32AQI
40AQI
39AQI
28AQI
23AQI
30AQI
28AQI
25AQI
22AQI
19AQI
25AQI
26AQI
31AQI
32AQI
31AQI
25AQI
22AQI
21AQI
32AQI
45AQI
43AQI
39AQI
19AQI
20AQI
25AQI
28AQI
27AQI
28AQI
26AQI
29AQI
22AQI
15AQI
17AQI
22AQI
24AQI
25AQI
27AQI
26AQI
33AQI
43AQI
49AQI
50AQI
51AQI
45AQI
51AQI
37AQI
45AQI
43AQI
42AQI
65AQI
41AQI
54AQI
48AQI
31AQI
27AQI
36AQI
36AQI
32AQI
20AQI
22AQI
26AQI
21AQI
26AQI
48AQI
26AQI
24AQI
28AQI
23AQI
20AQI
28AQI
31AQI
19AQI
19AQI
16AQI
22AQI
19AQI
14AQI
14AQI
25AQI
39AQI
43AQI
33AQI
56AQI
45AQI
46AQI
51AQI
19AQI
22AQI
20AQI
23AQI
25AQI
32AQI
30AQI
39AQI
No. of days
202526AQI
Highest AQI recorded in
October39AQI
Lowest AQI recorded in
March19AQI
Most & Least Polluted Years Over the Last 1 Years
Roosevelt's annual 2025 AQI (26) shows an average percentage change of NaN% (improved AQI) compared to previous years: .