Bristol, Indiana, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Bristol, Indiana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (12th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 40 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Oct - 13th Oct 2025
Bristol, Indiana, United States
7 AM12th Oct 2025
7 PM
6 AM13th Oct 2025
50AQI
34AQI
52AQI
36AQI
In the last 24 hours,
Bristol's AQI reached its highest point of 52 at 5 AM during the Night, while the lowest point, 34, was recorded at 5 PM during the Day between 12th Oct and 13th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Bristol, Indiana, United States
20°C12/28°C
22°C15/30°C
21°C11/31°C
20°C11/29°C
20°C10/30°C
21°C11/31°C
23°C14/32°C
21°C17/29°C
22°C17/29°C
21°C18/25°C
20°C16/27°C
19°C17/22°C
18°C16/23°C
18°C12/27°C
20°C13/29°C
20°C13/29°C
21°C14/30°C
20°C12/29°C
19°C12/28°C
18°C10/28°C
20°C11/31°C
23°C15/31°C
22°C14/30°C
22°C16/29°C
17°C11/20°C
11°C8/17°C
10°C3/19°C
13°C5/22°C
14°C9/18°C
13°C7/22°C
--°C/°C
40AQI
39AQI
43AQI
41AQI
2025 Days Vs Air Quality
Bristol, Indiana, United States
73%
146
27%
53
0.5%
1
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 73%
Health Risk Level:
Low
In 2025, 73% of 286 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Bristol, Indiana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI
42AQI
42AQI
36AQI
16AQI
19AQI
27AQI
21AQI
25AQI
18AQI
16AQI
22AQI
14AQI
26AQI
37AQI
38AQI
42AQI
39AQI
31AQI
17AQI
18AQI
32AQI
48AQI
37AQI
32AQI
33AQI
18AQI
32AQI
42AQI
39AQI
17AQI
28AQI
22AQI
33AQI
17AQI
25AQI
31AQI
18AQI
18AQI
21AQI
22AQI
31AQI
20AQI
21AQI
35AQI
24AQI
28AQI
25AQI
25AQI
43AQI
37AQI
20AQI
17AQI
16AQI
21AQI
20AQI
12AQI
12AQI
16AQI
20AQI
27AQI
26AQI
26AQI
32AQI
38AQI
36AQI
25AQI
36AQI
56AQI
60AQI
64AQI
76AQI
76AQI
72AQI
65AQI
56AQI
65AQI
77AQI
68AQI
58AQI
55AQI
53AQI
47AQI
41AQI
31AQI
35AQI
45AQI
47AQI
56AQI
54AQI
35AQI
44AQI
33AQI
26AQI
39AQI
38AQI
33AQI
50AQI
48AQI
55AQI
70AQI
58AQI
40AQI
61AQI
61AQI
47AQI
44AQI
44AQI
49AQI
73AQI
81AQI
57AQI
31AQI
28AQI
32AQI
28AQI
55AQI
62AQI
52AQI
55AQI
32AQI
30AQI
29AQI
34AQI
37AQI
50AQI
108AQI
91AQI
74AQI
81AQI
83AQI
95AQI
81AQI
60AQI
55AQI
54AQI
53AQI
50AQI
47AQI
48AQI
63AQI
67AQI
60AQI
45AQI
35AQI
26AQI
17AQI
21AQI
34AQI
32AQI
25AQI
17AQI
25AQI
33AQI
33AQI
21AQI
26AQI
37AQI
41AQI
40AQI
47AQI
35AQI
45AQI
22AQI
24AQI
34AQI
36AQI
50AQI
53AQI
54AQI
60AQI
57AQI
54AQI
50AQI
54AQI
56AQI
55AQI
39AQI
36AQI
33AQI
35AQI
34AQI
25AQI
35AQI
48AQI
52AQI
39AQI
34AQI
33AQI
34AQI
57AQI
60AQI
57AQI
30AQI
24AQI
29AQI
35AQI
41AQI
33AQI
40AQI
34AQI
28AQI
25AQI
51AQI
49AQI
48AQI
43AQI
39AQI
No. of days
202540AQI
Highest AQI recorded in
June51AQI
Lowest AQI recorded in
May25AQI
Most & Least Polluted Years Over the Last 1 Years
Bristol's annual 2025 AQI (40) shows an average percentage change of NaN% (improved AQI) compared to previous years: .