Lynden, 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
Lynden, Washington, United States
AQI Trends: Highest and Lowest
Same Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 46 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Lynden, Washington, United States
5 AM5th Aug 2025
9 PM
4 AM6th Aug 2025
51AQI
34AQI
58AQI
47AQI
In the last 24 hours,
Lynden's AQI reached its highest point of 58 at 4 AM during the Night, while the lowest point, 34, was recorded at 1 PM during the Day between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Lynden, Washington, United States
20°C13/28°C
21°C15/27°C
16°C14/20°C
16°C13/21°C
19°C11/26°C
20°C15/28°C
22°C16/30°C
18°C16/24°C
24°C15/33°C
24°C18/31°C
22°C17/29°C
17°C14/20°C
14°C12/16°C
16°C12/21°C
18°C12/25°C
17°C15/19°C
19°C14/25°C
18°C14/22°C
15°C12/18°C
16°C13/21°C
17°C11/23°C
18°C12/25°C
21°C14/30°C
22°C15/31°C
21°C17/29°C
19°C15/24°C
17°C15/20°C
15°C12/17°C
16°C14/19°C
18°C14/23°C
--°C/°C
30AQI
29AQI
30AQI
30AQI
2025 Days Vs Air Quality
Lynden, Washington, United States
98%
212
2%
5
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 218 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
Lynden, Washington, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
26AQI
22AQI
23AQI
21AQI
25AQI
33AQI
34AQI
29AQI
29AQI
24AQI
32AQI
38AQI
32AQI
43AQI
36AQI
35AQI
40AQI
44AQI
29AQI
48AQI
51AQI
55AQI
49AQI
30AQI
44AQI
43AQI
52AQI
56AQI
58AQI
35AQI
22AQI
22AQI
21AQI
21AQI
24AQI
22AQI
27AQI
45AQI
39AQI
35AQI
27AQI
42AQI
33AQI
38AQI
27AQI
23AQI
31AQI
36AQI
22AQI
25AQI
23AQI
22AQI
21AQI
24AQI
22AQI
23AQI
27AQI
36AQI
41AQI
45AQI
30AQI
25AQI
23AQI
26AQI
28AQI
28AQI
24AQI
22AQI
25AQI
22AQI
20AQI
20AQI
21AQI
20AQI
20AQI
19AQI
21AQI
17AQI
19AQI
19AQI
19AQI
19AQI
21AQI
23AQI
18AQI
17AQI
20AQI
24AQI
20AQI
20AQI
27AQI
25AQI
31AQI
34AQI
33AQI
16AQI
19AQI
19AQI
18AQI
20AQI
20AQI
27AQI
30AQI
25AQI
23AQI
25AQI
27AQI
26AQI
24AQI
21AQI
24AQI
29AQI
40AQI
46AQI
40AQI
42AQI
29AQI
19AQI
21AQI
33AQI
37AQI
18AQI
21AQI
23AQI
25AQI
26AQI
18AQI
25AQI
34AQI
28AQI
23AQI
32AQI
26AQI
30AQI
24AQI
21AQI
18AQI
21AQI
15AQI
17AQI
22AQI
20AQI
24AQI
24AQI
19AQI
22AQI
26AQI
20AQI
22AQI
27AQI
24AQI
27AQI
26AQI
19AQI
25AQI
21AQI
28AQI
25AQI
26AQI
34AQI
36AQI
41AQI
35AQI
28AQI
28AQI
24AQI
23AQI
22AQI
19AQI
20AQI
27AQI
26AQI
29AQI
36AQI
31AQI
21AQI
22AQI
22AQI
25AQI
25AQI
22AQI
24AQI
22AQI
23AQI
27AQI
26AQI
24AQI
19AQI
17AQI
18AQI
24AQI
20AQI
24AQI
25AQI
25AQI
35AQI
39AQI
39AQI
39AQI
38AQI
39AQI
38AQI
37AQI
25AQI
19AQI
26AQI
31AQI
30AQI
33AQI
31AQI
25AQI
23AQI
21AQI
28AQI
42AQI
46AQI
37AQI
28AQI
23AQI
27AQI
24AQI
27AQI
28AQI
32AQI
No. of days
202528AQI
Highest AQI recorded in
January37AQI
Lowest AQI recorded in
March23AQI
202428AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
January23AQI
202327AQI
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
January18AQI
202224AQI
Highest AQI recorded in
October36AQI
Lowest AQI recorded in
July16AQI
202124AQI
Highest AQI recorded in
April32AQI
Lowest AQI recorded in
October13AQI
202029AQI
Highest AQI recorded in
September61AQI
Lowest AQI recorded in
December21AQI
Most & Least Polluted Years Over the Last 6 Years
Lynden's annual 2025 AQI (28) shows an average percentage change of 6.01% (worsened AQI) compared to previous years: 2020 (29), 2021 (24), 2022 (24), 2023 (27), 2024 (28).