Madras, 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
Madras, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 18 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Madras, Oregon, United States
6 AM3rd Oct 2025
7 PM
5 AM4th Oct 2025
26AQI
13AQI
45AQI
13AQI
In the last 24 hours,
Madras's AQI reached its highest point of 45 at 4 AM during the Night, while the lowest point, 13, was recorded at 5 AM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Madras, Oregon, United States
25°C16/36°C
25°C16/34°C
23°C15/32°C
20°C13/27°C
19°C14/28°C
17°C12/23°C
18°C12/25°C
16°C11/21°C
18°C11/26°C
20°C11/29°C
15°C11/20°C
14°C6/23°C
18°C8/29°C
19°C10/28°C
18°C12/27°C
20°C13/29°C
21°C12/30°C
17°C9/21°C
13°C4/24°C
15°C5/27°C
19°C6/32°C
18°C9/29°C
15°C6/25°C
18°C5/30°C
19°C10/29°C
16°C11/23°C
13°C6/21°C
14°C10/20°C
12°C5/19°C
13°C9/19°C
--°C/°C
41AQI
40AQI
39AQI
39AQI
2025 Days Vs Air Quality
Madras, Oregon, United States
91%
251
9%
25
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% 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
Madras, Oregon, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
36AQI
33AQI
25AQI
22AQI
26AQI
29AQI
44AQI
35AQI
36AQI
28AQI
39AQI
42AQI
50AQI
52AQI
34AQI
33AQI
48AQI
47AQI
45AQI
46AQI
46AQI
52AQI
44AQI
39AQI
41AQI
48AQI
50AQI
51AQI
59AQI
41AQI
20AQI
24AQI
27AQI
23AQI
22AQI
30AQI
23AQI
24AQI
32AQI
25AQI
26AQI
39AQI
31AQI
27AQI
23AQI
30AQI
25AQI
40AQI
26AQI
34AQI
21AQI
21AQI
18AQI
20AQI
21AQI
31AQI
35AQI
33AQI
30AQI
24AQI
22AQI
26AQI
22AQI
18AQI
26AQI
29AQI
29AQI
19AQI
20AQI
18AQI
16AQI
17AQI
14AQI
14AQI
20AQI
18AQI
23AQI
15AQI
14AQI
15AQI
17AQI
16AQI
20AQI
20AQI
16AQI
16AQI
18AQI
28AQI
16AQI
20AQI
18AQI
18AQI
20AQI
24AQI
24AQI
18AQI
13AQI
13AQI
16AQI
15AQI
18AQI
21AQI
22AQI
22AQI
19AQI
18AQI
21AQI
20AQI
20AQI
14AQI
15AQI
21AQI
27AQI
26AQI
28AQI
22AQI
17AQI
14AQI
16AQI
20AQI
25AQI
14AQI
14AQI
15AQI
16AQI
18AQI
15AQI
17AQI
19AQI
15AQI
14AQI
13AQI
15AQI
17AQI
14AQI
13AQI
14AQI
12AQI
11AQI
15AQI
16AQI
16AQI
18AQI
19AQI
17AQI
15AQI
17AQI
16AQI
16AQI
17AQI
12AQI
15AQI
17AQI
18AQI
17AQI
20AQI
21AQI
21AQI
25AQI
27AQI
28AQI
25AQI
21AQI
20AQI
21AQI
21AQI
21AQI
18AQI
17AQI
16AQI
12AQI
13AQI
19AQI
38AQI
34AQI
22AQI
15AQI
15AQI
16AQI
17AQI
21AQI
19AQI
18AQI
17AQI
25AQI
18AQI
19AQI
25AQI
19AQI
17AQI
18AQI
21AQI
19AQI
19AQI
25AQI
33AQI
38AQI
35AQI
25AQI
23AQI
32AQI
26AQI
27AQI
27AQI
30AQI
20AQI
17AQI
19AQI
20AQI
24AQI
33AQI
58AQI
29AQI
25AQI
25AQI
32AQI
37AQI
18AQI
17AQI
17AQI
23AQI
25AQI
29AQI
40AQI
34AQI
25AQI
14AQI
16AQI
20AQI
25AQI
23AQI
22AQI
31AQI
47AQI
59AQI
57AQI
60AQI
58AQI
54AQI
56AQI
56AQI
57AQI
59AQI
60AQI
55AQI
52AQI
67AQI
51AQI
54AQI
60AQI
44AQI
35AQI
49AQI
56AQI
59AQI
38AQI
23AQI
23AQI
32AQI
32AQI
36AQI
47AQI
30AQI
22AQI
38AQI
52AQI
44AQI
31AQI
45AQI
52AQI
48AQI
14AQI
19AQI
13AQI
18AQI
40AQI
27AQI
20AQI
19AQI
16AQI
20AQI
24AQI
35AQI
44AQI
17AQI
No. of days
202527AQI
Highest AQI recorded in
September44AQI
Lowest AQI recorded in
May16AQI
202426AQI
Highest AQI recorded in
August41AQI
Lowest AQI recorded in
June11AQI
202330AQI
Highest AQI recorded in
August61AQI
Lowest AQI recorded in
April14AQI
202227AQI
Highest AQI recorded in
September43AQI
Lowest AQI recorded in
May11AQI
202128AQI
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
May14AQI
202039AQI
Highest AQI recorded in
September132AQI
Lowest AQI recorded in
June12AQI
Most & Least Polluted Years Over the Last 6 Years
Madras's annual 2025 AQI (27) shows an average percentage change of -7.9% (improved AQI) compared to previous years: 2020 (39), 2021 (28), 2022 (27), 2023 (30), 2024 (26).