Pullman, Washington, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Pullman, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (21st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Aug - 22nd Aug 2025
Pullman, Washington, United States
5 AM21st Aug 2025
8 PM
4 AM22nd Aug 2025
28AQI
22AQI
32AQI
21AQI
In the last 24 hours,
Pullman's AQI reached its highest point of 32 at 1 AM during the Night, while the lowest point, 21, was recorded at 10 PM during the Night between 21st Aug and 22nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Pullman, Washington, United States
24°C13/33°C
26°C15/34°C
25°C17/33°C
24°C15/31°C
24°C16/32°C
26°C16/35°C
28°C16/37°C
29°C17/38°C
28°C20/36°C
24°C19/29°C
25°C16/34°C
24°C15/33°C
21°C14/29°C
22°C13/30°C
22°C16/28°C
21°C17/25°C
20°C12/28°C
24°C14/32°C
26°C16/36°C
29°C20/37°C
28°C18/37°C
28°C19/36°C
24°C17/30°C
22°C15/29°C
22°C18/28°C
22°C14/29°C
23°C16/31°C
23°C15/31°C
23°C15/30°C
24°C15/33°C
--°C/°C
29AQI
27AQI
28AQI
25AQI
2025 Days Vs Air Quality
Pullman, Washington, United States
100%
233
Total number of days with different AQI categories in last 234 days in 2025 (131 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2025, 100% of 234 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
Pullman, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
22AQI
19AQI
18AQI
21AQI
22AQI
19AQI
23AQI
21AQI
24AQI
20AQI
19AQI
24AQI
21AQI
28AQI
26AQI
29AQI
24AQI
24AQI
22AQI
25AQI
38AQI
32AQI
39AQI
28AQI
30AQI
30AQI
32AQI
32AQI
31AQI
28AQI
16AQI
18AQI
20AQI
23AQI
21AQI
27AQI
24AQI
24AQI
34AQI
25AQI
26AQI
31AQI
21AQI
29AQI
28AQI
25AQI
28AQI
30AQI
21AQI
25AQI
21AQI
20AQI
19AQI
18AQI
21AQI
19AQI
19AQI
19AQI
21AQI
24AQI
19AQI
19AQI
17AQI
17AQI
18AQI
18AQI
18AQI
17AQI
16AQI
17AQI
16AQI
15AQI
14AQI
14AQI
14AQI
14AQI
15AQI
14AQI
14AQI
15AQI
15AQI
14AQI
19AQI
24AQI
18AQI
16AQI
14AQI
16AQI
16AQI
16AQI
18AQI
16AQI
17AQI
17AQI
20AQI
19AQI
14AQI
13AQI
17AQI
16AQI
18AQI
17AQI
21AQI
25AQI
23AQI
17AQI
18AQI
18AQI
19AQI
13AQI
14AQI
18AQI
27AQI
22AQI
27AQI
31AQI
19AQI
14AQI
16AQI
18AQI
22AQI
18AQI
14AQI
13AQI
14AQI
16AQI
15AQI
18AQI
22AQI
16AQI
15AQI
14AQI
14AQI
16AQI
13AQI
13AQI
13AQI
13AQI
11AQI
12AQI
15AQI
17AQI
18AQI
19AQI
18AQI
14AQI
16AQI
17AQI
14AQI
19AQI
20AQI
13AQI
15AQI
16AQI
20AQI
20AQI
20AQI
21AQI
24AQI
26AQI
26AQI
34AQI
23AQI
19AQI
20AQI
21AQI
22AQI
18AQI
17AQI
18AQI
14AQI
14AQI
22AQI
38AQI
34AQI
20AQI
15AQI
13AQI
15AQI
18AQI
22AQI
24AQI
21AQI
18AQI
27AQI
19AQI
20AQI
22AQI
20AQI
16AQI
19AQI
21AQI
20AQI
19AQI
21AQI
31AQI
35AQI
29AQI
29AQI
33AQI
25AQI
32AQI
34AQI
33AQI
22AQI
19AQI
19AQI
20AQI
24AQI
25AQI
33AQI
41AQI
48AQI
42AQI
33AQI
30AQI
31AQI
21AQI
17AQI
20AQI
24AQI
27AQI
27AQI
39AQI
39AQI
26AQI
18AQI
16AQI
22AQI
24AQI
26AQI
25AQI
26AQI
23AQI
17AQI
19AQI
16AQI
21AQI
24AQI
28AQI
No. of days
202521AQI
Highest AQI recorded in
August28AQI
Lowest AQI recorded in
May16AQI
202421AQI
Highest AQI recorded in
July37AQI
Lowest AQI recorded in
March9AQI
202321AQI
Highest AQI recorded in
August48AQI
Lowest AQI recorded in
March11AQI
202221AQI
Highest AQI recorded in
September54AQI
Lowest AQI recorded in
March9AQI
202121AQI
Highest AQI recorded in
August64AQI
Lowest AQI recorded in
May10AQI
202021AQI
Highest AQI recorded in
September63AQI
Lowest AQI recorded in
May9AQI
Most & Least Polluted Years Over the Last 6 Years
Pullman's annual 2025 AQI (21) shows an average percentage change of 2.05% (worsened AQI) compared to previous years: 2020 (21), 2021 (21), 2022 (21), 2023 (21), 2024 (21).