Anaheim, California, 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
Anaheim, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (26th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 58 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 26th Oct - 27th Oct 2025
Anaheim, California, United States
6 AM26th Oct 2025
6 PM
5 AM27th Oct 2025
70AQI
36AQI
74AQI
34AQI
In the last 24 hours,
Anaheim's AQI reached its highest point of 74 at 7 PM during the Night, while the lowest point, 34, was recorded at 2 AM during the Night between 26th Oct and 27th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Anaheim, California, United States
21°C18/26°C
22°C18/29°C
22°C17/29°C
22°C19/26°C
22°C18/29°C
22°C16/30°C
21°C17/26°C
20°C15/28°C
20°C14/30°C
19°C15/24°C
19°C15/26°C
19°C16/25°C
21°C14/30°C
23°C17/31°C
21°C16/29°C
20°C14/29°C
18°C14/22°C
16°C14/17°C
17°C12/23°C
18°C12/28°C
21°C11/32°C
22°C13/34°C
21°C14/31°C
21°C13/32°C
19°C13/26°C
19°C16/24°C
19°C14/27°C
19°C13/28°C
19°C16/24°C
17°C14/22°C
--°C/°C
41AQI
34AQI
40AQI
36AQI
2025 Days Vs Air Quality
Anaheim, California, United States
76%
164
24%
51
Total number of days with different AQI categories in last 300 days in 2025 (65 days remaining)
Under WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 300 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
Anaheim, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
25AQI
31AQI
37AQI
32AQI
21AQI
23AQI
28AQI
34AQI
41AQI
31AQI
33AQI
43AQI
49AQI
52AQI
54AQI
51AQI
51AQI
50AQI
52AQI
48AQI
39AQI
28AQI
33AQI
38AQI
47AQI
52AQI
50AQI
41AQI
42AQI
35AQI
21AQI
18AQI
30AQI
42AQI
44AQI
37AQI
43AQI
31AQI
36AQI
38AQI
39AQI
43AQI
53AQI
54AQI
50AQI
56AQI
49AQI
25AQI
35AQI
50AQI
51AQI
44AQI
35AQI
47AQI
53AQI
56AQI
55AQI
55AQI
53AQI
50AQI
51AQI
47AQI
46AQI
39AQI
44AQI
49AQI
45AQI
39AQI
34AQI
35AQI
32AQI
36AQI
40AQI
41AQI
41AQI
41AQI
45AQI
42AQI
48AQI
50AQI
53AQI
57AQI
57AQI
58AQI
54AQI
53AQI
52AQI
52AQI
53AQI
52AQI
46AQI
49AQI
51AQI
49AQI
50AQI
41AQI
41AQI
42AQI
37AQI
41AQI
85AQI
61AQI
55AQI
46AQI
40AQI
43AQI
45AQI
45AQI
43AQI
34AQI
28AQI
23AQI
26AQI
30AQI
36AQI
39AQI
34AQI
24AQI
33AQI
25AQI
20AQI
23AQI
28AQI
30AQI
40AQI
47AQI
48AQI
49AQI
50AQI
52AQI
56AQI
60AQI
62AQI
56AQI
48AQI
48AQI
47AQI
49AQI
50AQI
53AQI
49AQI
44AQI
28AQI
40AQI
45AQI
46AQI
48AQI
52AQI
57AQI
52AQI
52AQI
49AQI
50AQI
49AQI
51AQI
49AQI
50AQI
52AQI
51AQI
51AQI
46AQI
45AQI
44AQI
45AQI
43AQI
33AQI
23AQI
22AQI
23AQI
29AQI
41AQI
53AQI
55AQI
57AQI
36AQI
43AQI
37AQI
44AQI
46AQI
43AQI
40AQI
42AQI
43AQI
29AQI
28AQI
27AQI
28AQI
44AQI
32AQI
24AQI
28AQI
30AQI
33AQI
34AQI
47AQI
42AQI
40AQI
39AQI
41AQI
39AQI
41AQI
22AQI
15AQI
27AQI
31AQI
28AQI
33AQI
52AQI
60AQI
49AQI
38AQI
50AQI
58AQI
58AQI
29AQI
40AQI
46AQI
47AQI
38AQI
50AQI
40AQI
38AQI
No. of days
202542AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
March29AQI
Most & Least Polluted Years Over the Last 1 Years
Anaheim's annual 2025 AQI (42) shows an average percentage change of NaN% (improved AQI) compared to previous years: .