Charleston, 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!
August Air Quality Analysis
Charleston, South Carolina, United States
AQI Trends: Highest and Lowest
Same Day Analysis (16th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Charleston, South Carolina, United States
6 AM16th Aug 2026
8 PM
5 AM17th Aug 2026
77AQI
48AQI
58AQI
21AQI
In the last 24 hours,
Charleston's AQI reached its highest point of 77 at 6 AM during the Day, while the lowest point, 21, was recorded at 11 PM during the Night between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Charleston, South Carolina, United States
31°C27/34°C
30°C28/33°C
30°C28/33°C
30°C27/33°C
30°C28/34°C
30°C27/33°C
29°C27/34°C
28°C26/30°C
28°C25/33°C
30°C26/35°C
31°C29/34°C
29°C25/33°C
29°C26/33°C
29°C28/32°C
28°C25/32°C
28°C26/32°C
28°C25/31°C
28°C24/31°C
28°C25/32°C
29°C26/33°C
28°C27/31°C
28°C26/32°C
29°C26/33°C
29°C25/34°C
30°C25/35°C
30°C27/35°C
29°C25/33°C
30°C27/35°C
20°C13/30°C
31°C26/36°C
46AQI
43AQI
44AQI
41AQI
2026 Days Vs Air Quality
Charleston, South Carolina, United States
95%
214
5%
11
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 229 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
Charleston, South Carolina, United States
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI (US)
48AQI (US)
48AQI (US)
42AQI (US)
30AQI (US)
32AQI (US)
44AQI (US)
51AQI (US)
40AQI (US)
22AQI (US)
17AQI (US)
19AQI (US)
33AQI (US)
48AQI (US)
24AQI (US)
21AQI (US)
26AQI (US)
20AQI (US)
18AQI (US)
25AQI (US)
26AQI (US)
36AQI (US)
39AQI (US)
24AQI (US)
26AQI (US)
36AQI (US)
32AQI (US)
26AQI (US)
32AQI (US)
44AQI (US)
26AQI (US)
34AQI (US)
28AQI (US)
33AQI (US)
27AQI (US)
33AQI (US)
32AQI (US)
29AQI (US)
40AQI (US)
30AQI (US)
32AQI (US)
25AQI (US)
19AQI (US)
32AQI (US)
30AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
36AQI (US)
32AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
32AQI (US)
27AQI (US)
32AQI (US)
30AQI (US)
18AQI (US)
24AQI (US)
24AQI (US)
36AQI (US)
32AQI (US)
28AQI (US)
24AQI (US)
27AQI (US)
26AQI (US)
18AQI (US)
17AQI (US)
22AQI (US)
44AQI (US)
40AQI (US)
27AQI (US)
18AQI (US)
18AQI (US)
22AQI (US)
32AQI (US)
19AQI (US)
27AQI (US)
32AQI (US)
30AQI (US)
39AQI (US)
32AQI (US)
30AQI (US)
30AQI (US)
44AQI (US)
24AQI (US)
22AQI (US)
17AQI (US)
21AQI (US)
27AQI (US)
29AQI (US)
22AQI (US)
20AQI (US)
24AQI (US)
28AQI (US)
32AQI (US)
22AQI (US)
30AQI (US)
24AQI (US)
30AQI (US)
24AQI (US)
18AQI (US)
24AQI (US)
26AQI (US)
34AQI (US)
28AQI (US)
28AQI (US)
24AQI (US)
18AQI (US)
28AQI (US)
34AQI (US)
30AQI (US)
30AQI (US)
24AQI (US)
12AQI (US)
22AQI (US)
16AQI (US)
17AQI (US)
15AQI (US)
14AQI (US)
16AQI (US)
22AQI (US)
26AQI (US)
28AQI (US)
24AQI (US)
22AQI (US)
22AQI (US)
27AQI (US)
28AQI (US)
26AQI (US)
22AQI (US)
34AQI (US)
46AQI (US)
52AQI (US)
54AQI (US)
52AQI (US)
47AQI (US)
44AQI (US)
46AQI (US)
44AQI (US)
43AQI (US)
45AQI (US)
34AQI (US)
30AQI (US)
24AQI (US)
25AQI (US)
20AQI (US)
18AQI (US)
20AQI (US)
20AQI (US)
18AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
23AQI (US)
30AQI (US)
30AQI (US)
26AQI (US)
32AQI (US)
30AQI (US)
29AQI (US)
22AQI (US)
16AQI (US)
19AQI (US)
15AQI (US)
22AQI (US)
18AQI (US)
16AQI (US)
20AQI (US)
18AQI (US)
18AQI (US)
17AQI (US)
22AQI (US)
28AQI (US)
23AQI (US)
21AQI (US)
20AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
26AQI (US)
25AQI (US)
32AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
28AQI (US)
26AQI (US)
23AQI (US)
22AQI (US)
18AQI (US)
20AQI (US)
26AQI (US)
24AQI (US)
45AQI (US)
44AQI (US)
44AQI (US)
50AQI (US)
55AQI (US)
45AQI (US)
48AQI (US)
34AQI (US)
36AQI (US)
39AQI (US)
46AQI (US)
54AQI (US)
55AQI (US)
56AQI (US)
52AQI (US)
53AQI (US)
42AQI (US)
34AQI (US)
40AQI (US)
40AQI (US)
40AQI (US)
40AQI (US)
45AQI (US)
30AQI (US)
28AQI (US)
34AQI (US)
41AQI (US)
46AQI (US)
41AQI (US)
50AQI (US)
54AQI (US)
32AQI (US)
29AQI (US)
27AQI (US)
25AQI (US)
32AQI (US)
23AQI (US)
36AQI (US)
41AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
August41AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202539AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
October29AQI (US)
202435AQI (US)
Highest AQI (US) recorded in
October40AQI (US)
Lowest AQI (US) recorded in
March25AQI (US)
202327AQI (US)
Highest AQI (US) recorded in
November38AQI (US)
Lowest AQI (US) recorded in
December26AQI (US)
202234AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
July25AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
December45AQI (US)
Lowest AQI (US) recorded in
June31AQI (US)
202032AQI (US)
Highest AQI (US) recorded in
December38AQI (US)
Lowest AQI (US) recorded in
November29AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Charleston's annual 2026 AQI (US) (30) shows an average percentage change of -9.7% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (35), 2022 (34), 2023 (27), 2024 (35), 2025 (39).