Meridian, Idaho, 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
Meridian, Idaho, United States
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 16 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Meridian, Idaho, United States
7 AM3rd Oct 2025
7 PM
6 AM4th Oct 2025
48AQI
16AQI
48AQI
17AQI
In the last 24 hours,
Meridian's AQI reached its highest point of 48 at 5 PM during the Day, while the lowest point, 16, was recorded at 12 PM during the Day between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Meridian, Idaho, United States
27°C17/37°C
26°C15/36°C
23°C17/29°C
23°C14/33°C
24°C14/33°C
22°C14/29°C
20°C12/30°C
19°C11/26°C
19°C11/28°C
20°C12/30°C
19°C13/26°C
16°C8/26°C
18°C8/29°C
21°C9/31°C
22°C10/33°C
22°C13/33°C
23°C13/34°C
21°C14/29°C
18°C10/26°C
18°C8/29°C
19°C8/32°C
20°C9/32°C
19°C12/27°C
18°C7/29°C
19°C7/31°C
22°C17/30°C
17°C13/22°C
18°C12/26°C
17°C12/25°C
14°C12/18°C
--°C/°C
44AQI
39AQI
43AQI
40AQI
2025 Days Vs Air Quality
Meridian, Idaho, United States
60%
165
40%
111
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 60%
Health Risk Level:
Moderate
In 2025, 60% of 277 days were within WHO’s safe air quality limits, and 40% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Meridian, Idaho, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
47AQI
55AQI
59AQI
57AQI
56AQI
57AQI
55AQI
55AQI
57AQI
57AQI
58AQI
54AQI
56AQI
57AQI
55AQI
56AQI
62AQI
63AQI
62AQI
64AQI
61AQI
60AQI
56AQI
56AQI
54AQI
57AQI
57AQI
59AQI
60AQI
62AQI
58AQI
58AQI
56AQI
58AQI
58AQI
53AQI
54AQI
53AQI
54AQI
59AQI
57AQI
53AQI
56AQI
55AQI
67AQI
66AQI
53AQI
58AQI
58AQI
55AQI
54AQI
59AQI
57AQI
56AQI
56AQI
54AQI
55AQI
53AQI
55AQI
54AQI
57AQI
58AQI
55AQI
59AQI
54AQI
54AQI
55AQI
52AQI
53AQI
58AQI
57AQI
53AQI
55AQI
52AQI
53AQI
58AQI
52AQI
55AQI
50AQI
53AQI
52AQI
56AQI
51AQI
49AQI
51AQI
50AQI
48AQI
46AQI
47AQI
48AQI
45AQI
47AQI
48AQI
46AQI
46AQI
49AQI
43AQI
41AQI
48AQI
52AQI
52AQI
46AQI
46AQI
46AQI
45AQI
45AQI
45AQI
36AQI
43AQI
46AQI
35AQI
39AQI
40AQI
46AQI
46AQI
48AQI
44AQI
43AQI
45AQI
43AQI
45AQI
44AQI
46AQI
37AQI
39AQI
41AQI
40AQI
41AQI
44AQI
42AQI
44AQI
40AQI
37AQI
35AQI
37AQI
37AQI
42AQI
37AQI
38AQI
37AQI
35AQI
41AQI
43AQI
46AQI
43AQI
41AQI
38AQI
44AQI
46AQI
41AQI
46AQI
46AQI
34AQI
37AQI
40AQI
45AQI
48AQI
48AQI
46AQI
49AQI
52AQI
52AQI
50AQI
51AQI
47AQI
48AQI
49AQI
47AQI
51AQI
48AQI
45AQI
38AQI
36AQI
40AQI
46AQI
48AQI
48AQI
46AQI
40AQI
40AQI
46AQI
53AQI
52AQI
50AQI
45AQI
58AQI
53AQI
45AQI
46AQI
49AQI
45AQI
41AQI
47AQI
51AQI
45AQI
33AQI
31AQI
37AQI
53AQI
44AQI
31AQI
23AQI
28AQI
30AQI
32AQI
32AQI
32AQI
27AQI
30AQI
27AQI
34AQI
51AQI
38AQI
35AQI
44AQI
28AQI
27AQI
35AQI
26AQI
20AQI
26AQI
26AQI
26AQI
29AQI
39AQI
31AQI
29AQI
31AQI
19AQI
28AQI
34AQI
31AQI
25AQI
45AQI
61AQI
65AQI
56AQI
57AQI
35AQI
56AQI
53AQI
53AQI
51AQI
54AQI
52AQI
54AQI
57AQI
85AQI
71AQI
49AQI
40AQI
36AQI
46AQI
38AQI
36AQI
42AQI
42AQI
33AQI
34AQI
36AQI
38AQI
38AQI
43AQI
33AQI
26AQI
40AQI
36AQI
47AQI
46AQI
57AQI
63AQI
42AQI
29AQI
26AQI
21AQI
16AQI
57AQI
56AQI
53AQI
45AQI
41AQI
45AQI
40AQI
37AQI
45AQI
21AQI
No. of days
202546AQI
Highest AQI recorded in
January57AQI
Lowest AQI recorded in
October21AQI
202452AQI
Highest AQI recorded in
August63AQI
Lowest AQI recorded in
June43AQI
202351AQI
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
December26AQI
202245AQI
Highest AQI recorded in
September68AQI
Lowest AQI recorded in
May29AQI
202143AQI
Highest AQI recorded in
August66AQI
Lowest AQI recorded in
October31AQI
202043AQI
Highest AQI recorded in
September74AQI
Lowest AQI recorded in
June28AQI
Most & Least Polluted Years Over the Last 6 Years
Meridian's annual 2025 AQI (46) shows an average percentage change of -0.2% (improved AQI) compared to previous years: 2020 (43), 2021 (43), 2022 (45), 2023 (51), 2024 (52).