Northwest Reeder Road, Portland, Oregon, 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
Northwest Reeder Road, Portland, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (18th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Oct - 19th Oct 2025
Northwest Reeder Road, Portland, Oregon, United States
7 AM18th Oct 2025
6 PM
6 AM19th Oct 2025
64AQI
37AQI
67AQI
26AQI
In the last 24 hours,
Northwest Reeder Road's AQI reached its highest point of 67 at 10 PM during the Night, while the lowest point, 26, was recorded at 6 AM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Northwest Reeder Road, Portland, Oregon, United States
19°C12/29°C
17°C10/26°C
17°C13/23°C
17°C9/28°C
22°C15/32°C
22°C16/30°C
17°C11/23°C
16°C7/26°C
20°C12/29°C
18°C11/27°C
16°C13/19°C
15°C11/22°C
15°C12/19°C
14°C11/20°C
13°C10/18°C
15°C13/22°C
16°C11/23°C
17°C10/27°C
18°C11/26°C
13°C10/16°C
13°C8/20°C
13°C10/18°C
11°C10/13°C
11°C8/13°C
10°C5/16°C
12°C6/19°C
13°C7/19°C
10°C4/18°C
13°C10/18°C
11°C5/16°C
--°C/°C
35AQI
28AQI
38AQI
27AQI
2025 Days Vs Air Quality
Northwest Reeder Road, Portland, Oregon, United States
97%
201
3%
6
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2025, 97% of 292 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
Northwest Reeder Road, Portland, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
16AQI
16AQI
15AQI
18AQI
16AQI
21AQI
17AQI
17AQI
19AQI
19AQI
28AQI
17AQI
14AQI
15AQI
18AQI
16AQI
17AQI
20AQI
21AQI
21AQI
22AQI
21AQI
21AQI
20AQI
16AQI
14AQI
15AQI
16AQI
23AQI
27AQI
24AQI
17AQI
13AQI
15AQI
14AQI
24AQI
21AQI
13AQI
13AQI
14AQI
19AQI
18AQI
16AQI
18AQI
17AQI
14AQI
15AQI
15AQI
18AQI
17AQI
19AQI
17AQI
13AQI
15AQI
11AQI
13AQI
15AQI
13AQI
15AQI
14AQI
14AQI
14AQI
19AQI
13AQI
17AQI
16AQI
16AQI
18AQI
20AQI
14AQI
15AQI
18AQI
18AQI
27AQI
29AQI
29AQI
29AQI
25AQI
18AQI
18AQI
19AQI
18AQI
18AQI
15AQI
16AQI
15AQI
14AQI
15AQI
19AQI
26AQI
27AQI
16AQI
13AQI
12AQI
17AQI
19AQI
18AQI
15AQI
15AQI
16AQI
18AQI
17AQI
18AQI
20AQI
15AQI
15AQI
18AQI
18AQI
21AQI
17AQI
20AQI
24AQI
29AQI
27AQI
21AQI
19AQI
21AQI
21AQI
21AQI
17AQI
16AQI
16AQI
21AQI
21AQI
18AQI
19AQI
19AQI
17AQI
16AQI
20AQI
28AQI
35AQI
21AQI
17AQI
18AQI
19AQI
24AQI
27AQI
32AQI
27AQI
16AQI
14AQI
13AQI
16AQI
17AQI
18AQI
17AQI
20AQI
25AQI
32AQI
46AQI
43AQI
52AQI
42AQI
39AQI
40AQI
34AQI
41AQI
26AQI
31AQI
51AQI
41AQI
47AQI
44AQI
26AQI
26AQI
24AQI
41AQI
37AQI
21AQI
39AQI
17AQI
19AQI
22AQI
28AQI
23AQI
24AQI
38AQI
22AQI
20AQI
28AQI
48AQI
25AQI
24AQI
19AQI
23AQI
26AQI
18AQI
21AQI
18AQI
45AQI
36AQI
32AQI
56AQI
42AQI
40AQI
44AQI
44AQI
34AQI
33AQI
25AQI
32AQI
27AQI
54AQI
51AQI
53AQI
17AQI
19AQI
16AQI
19AQI
19AQI
27AQI
29AQI
38AQI
No. of days
202523AQI
Highest AQI recorded in
October38AQI
Lowest AQI recorded in
May16AQI
Most & Least Polluted Years Over the Last 1 Years
Northwest Reeder Road's annual 2025 AQI (23) shows an average percentage change of NaN% (improved AQI) compared to previous years: .