Thread, Hilo, Hawaii, 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
Thread, Hilo, Hawaii, United States
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 22 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Thread, Hilo, Hawaii, United States
5 AM1st Aug 2025
7 PM
4 AM2nd Aug 2025
29AQI
20AQI
21AQI
17AQI
In the last 24 hours,
Thread's AQI reached its highest point of 29 at 9 AM during the Day, while the lowest point, 17, was recorded at 1 AM during the Night between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Thread, Hilo, Hawaii, United States
23°C21/25°C
21°C20/22°C
21°C19/21°C
20°C18/21°C
20°C18/21°C
19°C17/20°C
21°C19/23°C
23°C21/25°C
22°C20/23°C
22°C20/23°C
21°C19/22°C
21°C20/21°C
21°C19/22°C
21°C19/23°C
22°C21/24°C
24°C22/26°C
23°C23/24°C
23°C23/25°C
23°C23/24°C
23°C22/25°C
22°C20/23°C
21°C19/21°C
22°C19/23°C
21°C19/22°C
21°C18/21°C
23°C18/26°C
24°C23/26°C
24°C22/27°C
23°C22/24°C
22°C21/23°C
--°C/°C
25AQI
21AQI
20AQI
20AQI
2025 Days Vs Air Quality
Thread, Hilo, Hawaii, United States
93%
198
7%
15
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% 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
Thread, Hilo, Hawaii, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
44AQI
38AQI
39AQI
40AQI
46AQI
43AQI
41AQI
37AQI
37AQI
36AQI
35AQI
37AQI
44AQI
34AQI
35AQI
36AQI
48AQI
47AQI
33AQI
32AQI
34AQI
34AQI
41AQI
35AQI
38AQI
35AQI
33AQI
33AQI
34AQI
33AQI
36AQI
31AQI
33AQI
30AQI
31AQI
35AQI
37AQI
32AQI
33AQI
32AQI
33AQI
36AQI
36AQI
40AQI
40AQI
40AQI
33AQI
37AQI
33AQI
33AQI
36AQI
33AQI
32AQI
36AQI
33AQI
36AQI
35AQI
37AQI
48AQI
38AQI
35AQI
34AQI
39AQI
37AQI
37AQI
37AQI
37AQI
45AQI
52AQI
53AQI
57AQI
55AQI
55AQI
60AQI
56AQI
58AQI
56AQI
59AQI
58AQI
55AQI
55AQI
54AQI
54AQI
36AQI
36AQI
28AQI
38AQI
28AQI
28AQI
28AQI
26AQI
26AQI
32AQI
37AQI
24AQI
23AQI
22AQI
17AQI
20AQI
19AQI
22AQI
21AQI
24AQI
22AQI
19AQI
23AQI
21AQI
21AQI
20AQI
20AQI
19AQI
18AQI
27AQI
25AQI
22AQI
20AQI
21AQI
27AQI
36AQI
35AQI
34AQI
36AQI
34AQI
34AQI
24AQI
25AQI
21AQI
24AQI
23AQI
24AQI
23AQI
23AQI
20AQI
23AQI
26AQI
21AQI
20AQI
20AQI
22AQI
18AQI
19AQI
23AQI
20AQI
23AQI
27AQI
23AQI
27AQI
20AQI
20AQI
18AQI
23AQI
20AQI
20AQI
23AQI
25AQI
25AQI
25AQI
23AQI
17AQI
16AQI
21AQI
21AQI
19AQI
18AQI
18AQI
18AQI
17AQI
18AQI
18AQI
20AQI
18AQI
22AQI
23AQI
20AQI
17AQI
17AQI
16AQI
17AQI
19AQI
19AQI
20AQI
19AQI
16AQI
18AQI
20AQI
19AQI
21AQI
23AQI
21AQI
19AQI
20AQI
21AQI
21AQI
21AQI
20AQI
21AQI
22AQI
22AQI
20AQI
21AQI
19AQI
22AQI
23AQI
26AQI
26AQI
22AQI
18AQI
18AQI
22AQI
22AQI
26AQI
23AQI
22AQI
38AQI
35AQI
45AQI
24AQI
24AQI
20AQI
21AQI
22AQI
No. of days
202529AQI
Highest AQI recorded in
March45AQI
Lowest AQI recorded in
June20AQI
202419AQI
Highest AQI recorded in
December32AQI
Lowest AQI recorded in
August15AQI
202318AQI
Highest AQI recorded in
March21AQI
Lowest AQI recorded in
December15AQI
202219AQI
Highest AQI recorded in
April24AQI
Lowest AQI recorded in
August9AQI
202114AQI
Highest AQI recorded in
July18AQI
Lowest AQI recorded in
April0AQI
202020AQI
Highest AQI recorded in
July24AQI
Lowest AQI recorded in
March16AQI
Most & Least Polluted Years Over the Last 6 Years
Thread's annual 2025 AQI (29) shows an average percentage change of 67.9% (worsened AQI) compared to previous years: 2020 (20), 2021 (14), 2022 (19), 2023 (18), 2024 (19).