Eugene, Oregon, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Eugene, Oregon, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 31 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jun - 3rd Jun 2026
Eugene, Oregon, United States
5 AM2nd Jun 2026
8 PM
4 AM3rd Jun 2026
33AQI
28AQI
32AQI
29AQI
In the last 24 hours,
Eugene's AQI reached its highest point of 33 at 8 AM during the Day, while the lowest point, 28, was recorded at 5 AM during the Day between 2nd Jun and 3rd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Eugene, Oregon, United States
16°C11/24°C
15°C9/22°C
15°C9/23°C
14°C8/23°C
17°C7/27°C
16°C10/22°C
17°C8/27°C
18°C10/25°C
15°C10/20°C
14°C7/20°C
12°C6/18°C
12°C9/15°C
12°C6/20°C
15°C6/23°C
14°C8/24°C
12°C6/19°C
18°C8/28°C
19°C10/28°C
18°C10/26°C
18°C9/28°C
13°C9/19°C
14°C9/19°C
17°C9/26°C
18°C11/27°C
14°C12/16°C
14°C7/21°C
14°C7/23°C
19°C7/29°C
21°C10/32°C
18°C14/23°C
47AQI
29AQI
37AQI
29AQI
2026 Days Vs Air Quality
Eugene, Oregon, United States
89%
134
11%
16
Total number of days with different AQI categories in last 154 days in 2026 (211 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2026, 89% of 154 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Eugene, Oregon, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
72AQI (US)
49AQI (US)
19AQI (US)
14AQI (US)
21AQI (US)
32AQI (US)
11AQI (US)
11AQI (US)
14AQI (US)
24AQI (US)
22AQI (US)
28AQI (US)
54AQI (US)
64AQI (US)
38AQI (US)
30AQI (US)
48AQI (US)
58AQI (US)
60AQI (US)
64AQI (US)
74AQI (US)
49AQI (US)
53AQI (US)
48AQI (US)
45AQI (US)
47AQI (US)
41AQI (US)
46AQI (US)
51AQI (US)
54AQI (US)
44AQI (US)
46AQI (US)
48AQI (US)
49AQI (US)
47AQI (US)
48AQI (US)
43AQI (US)
41AQI (US)
47AQI (US)
44AQI (US)
45AQI (US)
41AQI (US)
41AQI (US)
49AQI (US)
48AQI (US)
38AQI (US)
45AQI (US)
45AQI (US)
41AQI (US)
41AQI (US)
38AQI (US)
35AQI (US)
38AQI (US)
40AQI (US)
47AQI (US)
43AQI (US)
36AQI (US)
38AQI (US)
37AQI (US)
41AQI (US)
62AQI (US)
47AQI (US)
47AQI (US)
40AQI (US)
33AQI (US)
41AQI (US)
42AQI (US)
37AQI (US)
37AQI (US)
42AQI (US)
41AQI (US)
40AQI (US)
34AQI (US)
35AQI (US)
39AQI (US)
32AQI (US)
31AQI (US)
37AQI (US)
42AQI (US)
37AQI (US)
37AQI (US)
40AQI (US)
38AQI (US)
32AQI (US)
28AQI (US)
29AQI (US)
30AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
32AQI (US)
31AQI (US)
27AQI (US)
31AQI (US)
28AQI (US)
31AQI (US)
27AQI (US)
33AQI (US)
29AQI (US)
31AQI (US)
30AQI (US)
26AQI (US)
31AQI (US)
33AQI (US)
32AQI (US)
29AQI (US)
29AQI (US)
33AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
24AQI (US)
35AQI (US)
36AQI (US)
29AQI (US)
27AQI (US)
27AQI (US)
31AQI (US)
27AQI (US)
24AQI (US)
26AQI (US)
24AQI (US)
47AQI (US)
51AQI (US)
58AQI (US)
57AQI (US)
56AQI (US)
52AQI (US)
40AQI (US)
48AQI (US)
49AQI (US)
46AQI (US)
43AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
26AQI (US)
28AQI (US)
29AQI (US)
31AQI (US)
31AQI (US)
41AQI (US)
43AQI (US)
37AQI (US)
29AQI (US)
36AQI (US)
31AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
April29AQI (US)
202529AQI (US)
Highest AQI (US) recorded in
January45AQI (US)
Lowest AQI (US) recorded in
May18AQI (US)
202424AQI (US)
Highest AQI (US) recorded in
December35AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202325AQI (US)
Highest AQI (US) recorded in
November42AQI (US)
Lowest AQI (US) recorded in
April11AQI (US)
202228AQI (US)
Highest AQI (US) recorded in
October50AQI (US)
Lowest AQI (US) recorded in
July16AQI (US)
202124AQI (US)
Highest AQI (US) recorded in
November31AQI (US)
Lowest AQI (US) recorded in
February18AQI (US)
202041AQI (US)
Highest AQI (US) recorded in
September140AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Eugene's annual 2026 AQI (US) (37) shows an average percentage change of 34.3% (worsened AQI (US)) compared to previous years: 2020 (41), 2021 (24), 2022 (28), 2023 (25), 2024 (24), 2025 (29).