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: 15th Aug - 16th Aug 2026
Charleston, South Carolina, United States
6 AM15th Aug 2026
8 PM
5 AM16th Aug 2026
59AQI
47AQI
77AQI
38AQI
In the last 24 hours,
Charleston's AQI reached its highest point of 77 at 5 AM during the Night, while the lowest point, 38, was recorded at 10 PM during the Night between 15th Aug and 16th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Charleston, South Carolina, United States
30°C28/33°C
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
48AQI
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 228 days in 2026 (137 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 228 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).