Northgate, Salem, 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
Northgate, Salem, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (14th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 27 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Oct - 15th Oct 2025
Northgate, Salem, Oregon, United States
7 AM14th Oct 2025
6 PM
6 AM15th Oct 2025
33AQI
26AQI
39AQI
23AQI
In the last 24 hours,
Northgate's AQI reached its highest point of 39 at 1 AM during the Night, while the lowest point, 23, was recorded at 6 AM during the Night between 14th Oct and 15th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Northgate, Salem, Oregon, United States
16°C7/25°C
22°C11/36°C
19°C12/27°C
19°C12/27°C
19°C10/31°C
19°C12/29°C
16°C12/20°C
16°C7/26°C
20°C10/33°C
21°C12/32°C
18°C12/26°C
16°C7/24°C
18°C9/29°C
17°C10/26°C
15°C12/17°C
14°C10/22°C
15°C12/20°C
14°C10/21°C
14°C10/21°C
15°C12/21°C
16°C10/25°C
17°C8/30°C
18°C9/29°C
12°C9/17°C
12°C5/18°C
13°C10/18°C
12°C10/14°C
11°C9/13°C
10°C5/18°C
11°C5/21°C
--°C/°C
33AQI
27AQI
30AQI
27AQI
2025 Days Vs Air Quality
Northgate, Salem, Oregon, United States
98%
199
2%
4
Total number of days with different AQI categories in last 288 days in 2025 (77 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 288 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
Northgate, Salem, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
16AQI
17AQI
15AQI
23AQI
16AQI
23AQI
17AQI
18AQI
26AQI
36AQI
22AQI
14AQI
13AQI
16AQI
26AQI
18AQI
18AQI
21AQI
20AQI
28AQI
23AQI
25AQI
24AQI
20AQI
18AQI
15AQI
15AQI
20AQI
26AQI
27AQI
24AQI
17AQI
13AQI
14AQI
19AQI
31AQI
21AQI
13AQI
15AQI
16AQI
20AQI
21AQI
17AQI
21AQI
18AQI
14AQI
19AQI
15AQI
18AQI
19AQI
22AQI
14AQI
15AQI
17AQI
12AQI
14AQI
15AQI
15AQI
18AQI
15AQI
14AQI
16AQI
22AQI
14AQI
19AQI
17AQI
15AQI
17AQI
19AQI
15AQI
16AQI
19AQI
17AQI
26AQI
27AQI
25AQI
26AQI
24AQI
19AQI
18AQI
20AQI
19AQI
17AQI
14AQI
15AQI
15AQI
11AQI
12AQI
22AQI
30AQI
27AQI
15AQI
13AQI
14AQI
17AQI
22AQI
18AQI
14AQI
13AQI
16AQI
21AQI
17AQI
18AQI
20AQI
15AQI
14AQI
17AQI
18AQI
18AQI
15AQI
18AQI
22AQI
24AQI
24AQI
18AQI
19AQI
20AQI
21AQI
19AQI
16AQI
17AQI
15AQI
19AQI
18AQI
17AQI
20AQI
21AQI
18AQI
17AQI
20AQI
24AQI
26AQI
18AQI
16AQI
17AQI
20AQI
24AQI
27AQI
29AQI
28AQI
16AQI
14AQI
13AQI
15AQI
16AQI
18AQI
17AQI
19AQI
26AQI
36AQI
41AQI
39AQI
51AQI
35AQI
28AQI
29AQI
28AQI
36AQI
26AQI
27AQI
45AQI
51AQI
55AQI
38AQI
28AQI
26AQI
23AQI
37AQI
36AQI
25AQI
39AQI
19AQI
20AQI
24AQI
27AQI
28AQI
38AQI
35AQI
21AQI
21AQI
36AQI
55AQI
31AQI
24AQI
20AQI
28AQI
30AQI
18AQI
16AQI
21AQI
32AQI
23AQI
24AQI
38AQI
36AQI
39AQI
46AQI
47AQI
26AQI
27AQI
30AQI
27AQI
18AQI
21AQI
17AQI
19AQI
18AQI
25AQI
31AQI
31AQI
No. of days
202522AQI
Highest AQI recorded in
September31AQI
Lowest AQI recorded in
May17AQI
Most & Least Polluted Years Over the Last 1 Years
Northgate's annual 2025 AQI (22) shows an average percentage change of NaN% (improved AQI) compared to previous years: .