Bellevue, 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
Bellevue, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (1st August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 50 of Good air quality on the same day.
Day & Night AQI Trend: 1st Aug - 2nd Aug 2026
Bellevue, Washington, United States
5 AM1st Aug 2026
8 PM
4 AM2nd Aug 2026
94AQI
29AQI
64AQI
14AQI
In the last 24 hours,
Bellevue's AQI reached its highest point of 94 at 3 PM during the Day, while the lowest point, 14, was recorded at 11 PM during the Night between 1st Aug and 2nd Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Bellevue, Washington, United States
17°C13/22°C
18°C11/25°C
22°C12/32°C
20°C14/28°C
18°C14/23°C
20°C13/29°C
20°C15/28°C
19°C13/24°C
18°C13/24°C
19°C11/29°C
22°C12/33°C
23°C15/32°C
18°C15/22°C
18°C14/24°C
19°C14/25°C
20°C12/28°C
23°C14/34°C
27°C18/38°C
28°C18/39°C
22°C17/29°C
22°C15/30°C
19°C15/24°C
20°C16/26°C
21°C15/29°C
20°C17/24°C
19°C13/26°C
20°C12/28°C
22°C13/32°C
19°C16/25°C
17°C13/24°C
41AQI
30AQI
39AQI
30AQI
2026 Days Vs Air Quality
Bellevue, Washington, United States
97%
203
3%
7
Total number of days with different AQI categories in last 214 days in 2026 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 214 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
Bellevue, Washington, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
42AQI (US)
21AQI (US)
15AQI (US)
13AQI (US)
21AQI (US)
14AQI (US)
14AQI (US)
12AQI (US)
14AQI (US)
18AQI (US)
17AQI (US)
12AQI (US)
18AQI (US)
16AQI (US)
14AQI (US)
21AQI (US)
20AQI (US)
30AQI (US)
33AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
39AQI (US)
30AQI (US)
23AQI (US)
28AQI (US)
24AQI (US)
32AQI (US)
51AQI (US)
47AQI (US)
40AQI (US)
47AQI (US)
49AQI (US)
40AQI (US)
22AQI (US)
32AQI (US)
24AQI (US)
28AQI (US)
31AQI (US)
39AQI (US)
34AQI (US)
28AQI (US)
21AQI (US)
34AQI (US)
46AQI (US)
29AQI (US)
29AQI (US)
35AQI (US)
37AQI (US)
32AQI (US)
21AQI (US)
30AQI (US)
34AQI (US)
28AQI (US)
29AQI (US)
24AQI (US)
42AQI (US)
21AQI (US)
22AQI (US)
28AQI (US)
42AQI (US)
24AQI (US)
45AQI (US)
36AQI (US)
34AQI (US)
42AQI (US)
35AQI (US)
31AQI (US)
28AQI (US)
38AQI (US)
26AQI (US)
38AQI (US)
26AQI (US)
30AQI (US)
30AQI (US)
31AQI (US)
27AQI (US)
31AQI (US)
27AQI (US)
30AQI (US)
32AQI (US)
25AQI (US)
28AQI (US)
28AQI (US)
20AQI (US)
21AQI (US)
17AQI (US)
21AQI (US)
17AQI (US)
18AQI (US)
28AQI (US)
25AQI (US)
17AQI (US)
23AQI (US)
24AQI (US)
23AQI (US)
17AQI (US)
19AQI (US)
19AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
21AQI (US)
33AQI (US)
27AQI (US)
27AQI (US)
19AQI (US)
17AQI (US)
15AQI (US)
17AQI (US)
20AQI (US)
18AQI (US)
21AQI (US)
24AQI (US)
17AQI (US)
18AQI (US)
16AQI (US)
20AQI (US)
17AQI (US)
16AQI (US)
19AQI (US)
24AQI (US)
22AQI (US)
20AQI (US)
14AQI (US)
19AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
25AQI (US)
20AQI (US)
40AQI (US)
52AQI (US)
56AQI (US)
47AQI (US)
44AQI (US)
44AQI (US)
35AQI (US)
40AQI (US)
48AQI (US)
39AQI (US)
40AQI (US)
25AQI (US)
23AQI (US)
14AQI (US)
18AQI (US)
24AQI (US)
22AQI (US)
19AQI (US)
13AQI (US)
16AQI (US)
20AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
27AQI (US)
24AQI (US)
26AQI (US)
18AQI (US)
17AQI (US)
17AQI (US)
21AQI (US)
21AQI (US)
18AQI (US)
14AQI (US)
15AQI (US)
14AQI (US)
14AQI (US)
16AQI (US)
18AQI (US)
18AQI (US)
26AQI (US)
30AQI (US)
26AQI (US)
24AQI (US)
22AQI (US)
16AQI (US)
19AQI (US)
28AQI (US)
28AQI (US)
22AQI (US)
18AQI (US)
16AQI (US)
22AQI (US)
21AQI (US)
20AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
20AQI (US)
16AQI (US)
15AQI (US)
39AQI (US)
40AQI (US)
36AQI (US)
40AQI (US)
49AQI (US)
56AQI (US)
47AQI (US)
48AQI (US)
51AQI (US)
58AQI (US)
51AQI (US)
48AQI (US)
38AQI (US)
41AQI (US)
47AQI (US)
50AQI (US)
24AQI (US)
32AQI (US)
29AQI (US)
22AQI (US)
29AQI (US)
20AQI (US)
33AQI (US)
50AQI (US)
No. of days
202627AQI (US)
Highest AQI (US) recorded in
August50AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202525AQI (US)
Highest AQI (US) recorded in
January36AQI (US)
Lowest AQI (US) recorded in
May16AQI (US)
202415AQI (US)
Highest AQI (US) recorded in
December32AQI (US)
Lowest AQI (US) recorded in
April5AQI (US)
202315AQI (US)
Highest AQI (US) recorded in
August30AQI (US)
Lowest AQI (US) recorded in
April7AQI (US)
202218AQI (US)
Highest AQI (US) recorded in
October57AQI (US)
Lowest AQI (US) recorded in
May8AQI (US)
202112AQI (US)
Highest AQI (US) recorded in
August18AQI (US)
Lowest AQI (US) recorded in
May7AQI (US)
202029AQI (US)
Highest AQI (US) recorded in
September69AQI (US)
Lowest AQI (US) recorded in
December15AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Bellevue's annual 2026 AQI (US) (27) shows an average percentage change of 56.01% (worsened AQI (US)) compared to previous years: 2020 (29), 2021 (12), 2022 (18), 2023 (15), 2024 (15), 2025 (25).