Walla Walla, Washington, 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
Walla Walla, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 24 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Jun - 4th Jun 2026
Walla Walla, Washington, United States
5 AM3rd Jun 2026
8 PM
4 AM4th Jun 2026
28AQI
20AQI
26AQI
21AQI
In the last 24 hours,
Walla Walla's AQI reached its highest point of 28 at 6 PM during the Day, while the lowest point, 20, was recorded at 7 AM during the Day between 3rd Jun and 4th Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Walla Walla, Washington, United States
19°C12/26°C
16°C11/22°C
15°C9/21°C
16°C8/23°C
17°C11/23°C
16°C8/23°C
20°C11/30°C
13°C10/15°C
12°C8/17°C
11°C7/16°C
9°C6/13°C
10°C4/17°C
13°C7/19°C
13°C8/20°C
13°C7/19°C
16°C8/22°C
18°C10/25°C
20°C13/26°C
19°C12/26°C
20°C12/27°C
12°C10/15°C
18°C12/25°C
22°C15/30°C
17°C13/22°C
14°C10/19°C
14°C8/20°C
17°C10/24°C
18°C10/25°C
19°C13/26°C
16°C11/22°C
40AQI
31AQI
33AQI
32AQI
2026 Days Vs Air Quality
Walla Walla, Washington, United States
98%
148
2%
3
Total number of days with different AQI categories in last 155 days in 2026 (210 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2026, 98% of 155 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
Walla Walla, Washington, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
54AQI (US)
38AQI (US)
32AQI (US)
25AQI (US)
22AQI (US)
16AQI (US)
13AQI (US)
18AQI (US)
15AQI (US)
26AQI (US)
38AQI (US)
30AQI (US)
20AQI (US)
33AQI (US)
39AQI (US)
32AQI (US)
17AQI (US)
23AQI (US)
28AQI (US)
27AQI (US)
30AQI (US)
37AQI (US)
45AQI (US)
39AQI (US)
40AQI (US)
40AQI (US)
34AQI (US)
35AQI (US)
39AQI (US)
47AQI (US)
35AQI (US)
40AQI (US)
49AQI (US)
46AQI (US)
41AQI (US)
41AQI (US)
34AQI (US)
31AQI (US)
40AQI (US)
44AQI (US)
40AQI (US)
34AQI (US)
29AQI (US)
30AQI (US)
32AQI (US)
32AQI (US)
39AQI (US)
41AQI (US)
38AQI (US)
34AQI (US)
33AQI (US)
27AQI (US)
33AQI (US)
32AQI (US)
42AQI (US)
40AQI (US)
32AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
44AQI (US)
37AQI (US)
39AQI (US)
40AQI (US)
32AQI (US)
35AQI (US)
43AQI (US)
40AQI (US)
32AQI (US)
38AQI (US)
46AQI (US)
41AQI (US)
36AQI (US)
28AQI (US)
23AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
36AQI (US)
38AQI (US)
33AQI (US)
33AQI (US)
29AQI (US)
31AQI (US)
25AQI (US)
20AQI (US)
23AQI (US)
18AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
27AQI (US)
24AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
28AQI (US)
28AQI (US)
29AQI (US)
30AQI (US)
25AQI (US)
33AQI (US)
35AQI (US)
31AQI (US)
29AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
34AQI (US)
22AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
23AQI (US)
23AQI (US)
22AQI (US)
23AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
29AQI (US)
34AQI (US)
39AQI (US)
32AQI (US)
32AQI (US)
25AQI (US)
27AQI (US)
25AQI (US)
43AQI (US)
32AQI (US)
39AQI (US)
49AQI (US)
53AQI (US)
51AQI (US)
48AQI (US)
48AQI (US)
41AQI (US)
40AQI (US)
46AQI (US)
46AQI (US)
43AQI (US)
29AQI (US)
21AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
22AQI (US)
26AQI (US)
21AQI (US)
24AQI (US)
31AQI (US)
36AQI (US)
32AQI (US)
26AQI (US)
35AQI (US)
24AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
February36AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202528AQI (US)
Highest AQI (US) recorded in
September48AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202421AQI (US)
Highest AQI (US) recorded in
August31AQI (US)
Lowest AQI (US) recorded in
May8AQI (US)
202324AQI (US)
Highest AQI (US) recorded in
August49AQI (US)
Lowest AQI (US) recorded in
April12AQI (US)
202223AQI (US)
Highest AQI (US) recorded in
September45AQI (US)
Lowest AQI (US) recorded in
May8AQI (US)
202123AQI (US)
Highest AQI (US) recorded in
August57AQI (US)
Lowest AQI (US) recorded in
May11AQI (US)
202028AQI (US)
Highest AQI (US) recorded in
September85AQI (US)
Lowest AQI (US) recorded in
June11AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Walla Walla's annual 2026 AQI (US) (32) shows an average percentage change of 32.09% (worsened AQI (US)) compared to previous years: 2020 (28), 2021 (23), 2022 (23), 2023 (24), 2024 (21), 2025 (28).