Simpsonville, South Carolina, 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
Simpsonville, South Carolina, United States
AQI Trends: Highest and Lowest
Same Day Analysis (16th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 38 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 16th Oct - 17th Oct 2025
Simpsonville, South Carolina, United States
7 AM16th Oct 2025
7 PM
6 AM17th Oct 2025
41AQI
13AQI
56AQI
16AQI
In the last 24 hours,
Simpsonville's AQI reached its highest point of 56 at 3 AM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 16th Oct and 17th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Simpsonville, South Carolina, United States
23°C17/29°C
24°C17/31°C
25°C18/32°C
25°C19/32°C
24°C17/32°C
23°C16/31°C
24°C16/33°C
26°C18/34°C
25°C21/32°C
24°C21/29°C
22°C19/26°C
22°C17/28°C
21°C18/25°C
20°C18/25°C
22°C17/30°C
19°C13/26°C
18°C12/27°C
18°C11/26°C
20°C15/25°C
22°C16/30°C
22°C16/29°C
24°C19/30°C
19°C15/25°C
15°C10/20°C
17°C11/24°C
19°C13/26°C
21°C15/27°C
21°C14/30°C
20°C13/29°C
20°C13/28°C
--°C/°C
37AQI
30AQI
38AQI
32AQI
2025 Days Vs Air Quality
Simpsonville, South Carolina, United States
86%
175
14%
29
Total number of days with different AQI categories in last 290 days in 2025 (75 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 290 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
Simpsonville, South Carolina, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
42AQI
57AQI
48AQI
38AQI
26AQI
18AQI
38AQI
40AQI
44AQI
42AQI
28AQI
21AQI
22AQI
25AQI
48AQI
27AQI
27AQI
33AQI
44AQI
38AQI
24AQI
42AQI
57AQI
54AQI
52AQI
44AQI
43AQI
35AQI
40AQI
45AQI
33AQI
30AQI
37AQI
41AQI
49AQI
49AQI
39AQI
30AQI
19AQI
27AQI
29AQI
36AQI
44AQI
29AQI
28AQI
33AQI
22AQI
20AQI
28AQI
45AQI
50AQI
34AQI
32AQI
38AQI
44AQI
31AQI
20AQI
19AQI
26AQI
40AQI
40AQI
17AQI
18AQI
31AQI
24AQI
36AQI
52AQI
53AQI
58AQI
62AQI
50AQI
50AQI
37AQI
35AQI
35AQI
30AQI
46AQI
54AQI
29AQI
26AQI
28AQI
34AQI
31AQI
25AQI
29AQI
30AQI
44AQI
47AQI
55AQI
58AQI
61AQI
50AQI
51AQI
40AQI
39AQI
41AQI
39AQI
29AQI
37AQI
54AQI
67AQI
56AQI
51AQI
56AQI
53AQI
36AQI
33AQI
34AQI
38AQI
33AQI
39AQI
33AQI
35AQI
32AQI
26AQI
38AQI
42AQI
40AQI
41AQI
52AQI
38AQI
33AQI
33AQI
27AQI
27AQI
35AQI
31AQI
37AQI
27AQI
34AQI
37AQI
30AQI
29AQI
31AQI
51AQI
60AQI
52AQI
23AQI
22AQI
26AQI
26AQI
38AQI
44AQI
47AQI
51AQI
49AQI
46AQI
41AQI
33AQI
32AQI
36AQI
31AQI
26AQI
28AQI
41AQI
40AQI
45AQI
44AQI
36AQI
32AQI
42AQI
47AQI
49AQI
54AQI
38AQI
28AQI
30AQI
33AQI
41AQI
43AQI
45AQI
50AQI
51AQI
50AQI
45AQI
52AQI
55AQI
49AQI
51AQI
50AQI
48AQI
50AQI
23AQI
21AQI
16AQI
24AQI
24AQI
18AQI
41AQI
42AQI
35AQI
45AQI
38AQI
16AQI
26AQI
34AQI
21AQI
26AQI
27AQI
26AQI
18AQI
22AQI
34AQI
38AQI
42AQI
37AQI
32AQI
43AQI
39AQI
37AQI
40AQI
31AQI
No. of days
202537AQI
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
October31AQI
Most & Least Polluted Years Over the Last 1 Years
Simpsonville's annual 2025 AQI (37) shows an average percentage change of NaN% (improved AQI) compared to previous years: .