Charleston, West Virginia, 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
Charleston, West Virginia, United States
AQI Trends: Highest and Lowest
Same Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 46 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Oct - 19th Oct 2025
Charleston, West Virginia, United States
7 AM18th Oct 2025
7 PM
6 AM19th Oct 2025
59AQI
25AQI
60AQI
31AQI
In the last 24 hours,
Charleston's AQI reached its highest point of 60 at 1 AM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Charleston, West Virginia, United States
21°C9/30°C
23°C16/31°C
26°C18/34°C
24°C19/30°C
22°C19/26°C
22°C19/27°C
22°C20/25°C
21°C19/27°C
21°C16/27°C
22°C16/30°C
21°C14/30°C
22°C17/30°C
20°C12/30°C
20°C12/29°C
20°C11/29°C
20°C10/30°C
21°C9/31°C
22°C14/32°C
21°C17/27°C
17°C11/20°C
13°C6/20°C
14°C5/24°C
15°C8/25°C
15°C8/23°C
17°C11/26°C
14°C9/21°C
14°C8/23°C
14°C8/22°C
12°C3/22°C
18°C9/30°C
--°C/°C
37AQI
35AQI
36AQI
33AQI
2025 Days Vs Air Quality
Charleston, West Virginia, United States
89%
260
11%
31
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 292 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
Charleston, West Virginia, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
23AQI
23AQI
22AQI
25AQI
23AQI
22AQI
29AQI
43AQI
51AQI
44AQI
41AQI
35AQI
27AQI
39AQI
41AQI
39AQI
34AQI
26AQI
26AQI
33AQI
40AQI
43AQI
40AQI
37AQI
32AQI
38AQI
26AQI
27AQI
35AQI
29AQI
27AQI
30AQI
43AQI
33AQI
27AQI
26AQI
24AQI
26AQI
28AQI
30AQI
26AQI
26AQI
25AQI
26AQI
28AQI
24AQI
26AQI
30AQI
29AQI
27AQI
29AQI
38AQI
38AQI
30AQI
34AQI
41AQI
30AQI
26AQI
28AQI
28AQI
34AQI
40AQI
28AQI
23AQI
28AQI
30AQI
32AQI
35AQI
41AQI
49AQI
55AQI
53AQI
51AQI
34AQI
19AQI
23AQI
34AQI
29AQI
19AQI
21AQI
24AQI
21AQI
20AQI
23AQI
25AQI
41AQI
60AQI
39AQI
20AQI
21AQI
25AQI
23AQI
21AQI
19AQI
15AQI
17AQI
20AQI
19AQI
28AQI
34AQI
27AQI
25AQI
35AQI
25AQI
22AQI
27AQI
44AQI
53AQI
43AQI
40AQI
28AQI
28AQI
39AQI
38AQI
29AQI
18AQI
23AQI
37AQI
26AQI
35AQI
26AQI
21AQI
17AQI
19AQI
17AQI
25AQI
32AQI
24AQI
26AQI
27AQI
24AQI
20AQI
23AQI
34AQI
42AQI
24AQI
23AQI
27AQI
26AQI
25AQI
14AQI
15AQI
19AQI
22AQI
23AQI
20AQI
16AQI
27AQI
24AQI
37AQI
30AQI
31AQI
44AQI
64AQI
62AQI
50AQI
30AQI
30AQI
44AQI
39AQI
58AQI
63AQI
63AQI
28AQI
23AQI
22AQI
24AQI
22AQI
23AQI
24AQI
40AQI
43AQI
51AQI
57AQI
55AQI
53AQI
33AQI
31AQI
35AQI
37AQI
34AQI
27AQI
42AQI
52AQI
71AQI
55AQI
51AQI
43AQI
37AQI
33AQI
38AQI
40AQI
36AQI
35AQI
32AQI
39AQI
33AQI
22AQI
28AQI
32AQI
35AQI
39AQI
41AQI
35AQI
47AQI
46AQI
30AQI
28AQI
35AQI
46AQI
46AQI
52AQI
43AQI
42AQI
42AQI
44AQI
48AQI
38AQI
51AQI
57AQI
55AQI
50AQI
35AQI
26AQI
36AQI
54AQI
54AQI
50AQI
40AQI
43AQI
40AQI
25AQI
29AQI
38AQI
38AQI
25AQI
24AQI
27AQI
31AQI
35AQI
29AQI
30AQI
30AQI
30AQI
37AQI
34AQI
47AQI
47AQI
34AQI
28AQI
30AQI
37AQI
44AQI
44AQI
47AQI
50AQI
52AQI
53AQI
53AQI
49AQI
54AQI
52AQI
50AQI
44AQI
36AQI
37AQI
24AQI
29AQI
35AQI
29AQI
40AQI
47AQI
39AQI
40AQI
42AQI
54AQI
50AQI
49AQI
31AQI
21AQI
31AQI
26AQI
42AQI
42AQI
31AQI
38AQI
43AQI
27AQI
44AQI
46AQI
33AQI
30AQI
32AQI
28AQI
24AQI
40AQI
39AQI
40AQI
41AQI
39AQI
No. of days
202534AQI
Highest AQI recorded in
September41AQI
Lowest AQI recorded in
May24AQI
202432AQI
Highest AQI recorded in
July38AQI
Lowest AQI recorded in
November28AQI
202337AQI
Highest AQI recorded in
June62AQI
Lowest AQI recorded in
January24AQI
202233AQI
Highest AQI recorded in
June51AQI
Lowest AQI recorded in
November18AQI
202135AQI
Highest AQI recorded in
July50AQI
Lowest AQI recorded in
January21AQI
202026AQI
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
December16AQI
Most & Least Polluted Years Over the Last 6 Years
Charleston's annual 2025 AQI (34) shows an average percentage change of 6.8% (worsened AQI) compared to previous years: 2020 (26), 2021 (35), 2022 (33), 2023 (37), 2024 (32).