Riverside, 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
Riverside, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (25th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 81 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 25th Oct - 26th Oct 2025
Riverside, California, United States
6 AM25th Oct 2025
6 PM
5 AM26th Oct 2025
78AQI
55AQI
66AQI
53AQI
In the last 24 hours,
Riverside's AQI reached its highest point of 78 at 5 PM during the Day, while the lowest point, 53, was recorded at 10 PM during the Night between 25th Oct and 26th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Riverside, California, United States
21°C18/26°C
22°C18/30°C
22°C17/31°C
22°C15/32°C
22°C17/30°C
21°C14/31°C
22°C14/32°C
20°C14/29°C
19°C12/30°C
21°C12/32°C
20°C12/31°C
20°C12/31°C
19°C12/30°C
20°C13/29°C
24°C17/35°C
23°C17/32°C
20°C12/32°C
17°C12/21°C
15°C12/21°C
16°C12/22°C
18°C9/30°C
21°C12/32°C
22°C12/34°C
21°C12/33°C
21°C11/34°C
21°C13/32°C
18°C13/27°C
18°C11/26°C
20°C11/32°C
17°C12/28°C
--°C/°C
55AQI
48AQI
50AQI
47AQI
2025 Days Vs Air Quality
Riverside, California, United States
42%
89
58%
125
Total number of days with different AQI categories in last 299 days in 2025 (66 days remaining)
Under WHO’s Safe Air Quality Limits: 42%
Health Risk Level:
Significant
In 2025, 42% of 299 days were within WHO’s safe air quality limits, and 58% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Riverside, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
38AQI
41AQI
30AQI
40AQI
40AQI
25AQI
27AQI
29AQI
32AQI
39AQI
32AQI
35AQI
41AQI
54AQI
52AQI
56AQI
58AQI
56AQI
63AQI
60AQI
56AQI
47AQI
31AQI
31AQI
42AQI
47AQI
53AQI
54AQI
49AQI
45AQI
42AQI
27AQI
26AQI
32AQI
45AQI
53AQI
49AQI
51AQI
50AQI
24AQI
28AQI
34AQI
44AQI
52AQI
54AQI
50AQI
46AQI
51AQI
27AQI
34AQI
48AQI
54AQI
42AQI
36AQI
50AQI
54AQI
58AQI
60AQI
60AQI
55AQI
51AQI
52AQI
51AQI
50AQI
50AQI
53AQI
59AQI
46AQI
40AQI
41AQI
48AQI
49AQI
48AQI
53AQI
55AQI
54AQI
55AQI
56AQI
56AQI
55AQI
58AQI
62AQI
63AQI
65AQI
62AQI
58AQI
57AQI
56AQI
56AQI
56AQI
55AQI
53AQI
55AQI
54AQI
54AQI
54AQI
52AQI
53AQI
51AQI
47AQI
48AQI
96AQI
63AQI
58AQI
56AQI
53AQI
53AQI
55AQI
57AQI
55AQI
53AQI
42AQI
37AQI
32AQI
37AQI
44AQI
45AQI
46AQI
41AQI
40AQI
38AQI
31AQI
32AQI
38AQI
41AQI
47AQI
54AQI
57AQI
58AQI
55AQI
59AQI
64AQI
67AQI
71AQI
69AQI
66AQI
59AQI
58AQI
58AQI
57AQI
58AQI
68AQI
59AQI
46AQI
51AQI
54AQI
53AQI
53AQI
57AQI
60AQI
56AQI
61AQI
56AQI
54AQI
51AQI
52AQI
51AQI
52AQI
54AQI
51AQI
47AQI
55AQI
51AQI
55AQI
57AQI
58AQI
51AQI
41AQI
34AQI
39AQI
42AQI
50AQI
58AQI
59AQI
60AQI
46AQI
42AQI
44AQI
46AQI
52AQI
52AQI
49AQI
52AQI
51AQI
46AQI
38AQI
40AQI
44AQI
46AQI
55AQI
48AQI
46AQI
51AQI
58AQI
60AQI
75AQI
72AQI
73AQI
64AQI
57AQI
52AQI
54AQI
38AQI
49AQI
45AQI
52AQI
45AQI
45AQI
57AQI
67AQI
56AQI
49AQI
63AQI
81AQI
36AQI
44AQI
48AQI
54AQI
48AQI
58AQI
49AQI
56AQI
No. of days
202550AQI
Highest AQI recorded in
August58AQI
Lowest AQI recorded in
March36AQI
Most & Least Polluted Years Over the Last 1 Years
Riverside's annual 2025 AQI (50) shows an average percentage change of NaN% (improved AQI) compared to previous years: .