Mammoth Lakes, 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
Mammoth Lakes, California, United States
AQI Trends: Highest and Lowest
Same Day Analysis (21st October ):
On this day, AQI across the 5 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: 21st Oct - 22nd Oct 2025
Mammoth Lakes, California, United States
6 AM21st Oct 2025
6 PM
5 AM22nd Oct 2025
67AQI
39AQI
62AQI
44AQI
In the last 24 hours,
Mammoth Lakes's AQI reached its highest point of 67 at 10 AM during the Day, while the lowest point, 39, was recorded at 8 AM during the Day between 21st Oct and 22nd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Mammoth Lakes, California, United States
12°C6/19°C
12°C6/20°C
12°C7/19°C
10°C7/13°C
11°C5/17°C
12°C6/18°C
10°C5/16°C
9°C4/14°C
6°C2/10°C
8°C1/15°C
7°C2/13°C
4°C0/8°C
6°C2/12°C
7°C1/12°C
7°C0/14°C
8°C1/16°C
8°C2/16°C
8°C2/17°C
7°C2/14°C
2°C-3/8°C
3°C-4/13°C
1°C-3/6°C
-2°C-5/1°C
-1°C-8/5°C
-1°C-8/5°C
2°C-8/11°C
6°C-3/16°C
6°C-4/15°C
7°C0/16°C
9°C2/17°C
--°C/°C
36AQI
28AQI
36AQI
32AQI
2025 Days Vs Air Quality
Mammoth Lakes, California, United States
91%
268
9%
25
0.3%
1
Total number of days with different AQI categories in last 295 days in 2025 (70 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 295 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
Mammoth Lakes, California, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
32AQI
46AQI
43AQI
50AQI
45AQI
45AQI
48AQI
48AQI
50AQI
45AQI
46AQI
46AQI
50AQI
49AQI
47AQI
43AQI
55AQI
55AQI
50AQI
55AQI
52AQI
52AQI
51AQI
53AQI
50AQI
51AQI
51AQI
53AQI
58AQI
55AQI
57AQI
47AQI
47AQI
41AQI
36AQI
40AQI
37AQI
39AQI
44AQI
47AQI
46AQI
48AQI
38AQI
30AQI
27AQI
25AQI
26AQI
28AQI
27AQI
25AQI
28AQI
27AQI
28AQI
25AQI
23AQI
25AQI
30AQI
32AQI
31AQI
32AQI
26AQI
29AQI
25AQI
23AQI
26AQI
29AQI
29AQI
25AQI
29AQI
23AQI
28AQI
35AQI
38AQI
41AQI
36AQI
37AQI
41AQI
37AQI
45AQI
35AQI
46AQI
43AQI
39AQI
38AQI
37AQI
40AQI
38AQI
43AQI
40AQI
34AQI
31AQI
33AQI
26AQI
28AQI
28AQI
28AQI
33AQI
35AQI
38AQI
32AQI
29AQI
35AQI
30AQI
29AQI
32AQI
29AQI
30AQI
28AQI
26AQI
25AQI
26AQI
29AQI
30AQI
28AQI
26AQI
27AQI
24AQI
29AQI
25AQI
26AQI
27AQI
26AQI
25AQI
24AQI
23AQI
24AQI
27AQI
29AQI
26AQI
35AQI
32AQI
29AQI
28AQI
23AQI
27AQI
27AQI
32AQI
31AQI
29AQI
30AQI
32AQI
30AQI
30AQI
28AQI
27AQI
29AQI
34AQI
30AQI
32AQI
33AQI
32AQI
33AQI
27AQI
30AQI
29AQI
30AQI
31AQI
32AQI
33AQI
32AQI
33AQI
31AQI
31AQI
30AQI
30AQI
29AQI
27AQI
32AQI
37AQI
41AQI
37AQI
35AQI
30AQI
31AQI
31AQI
34AQI
38AQI
39AQI
37AQI
35AQI
33AQI
34AQI
34AQI
32AQI
32AQI
29AQI
29AQI
28AQI
28AQI
33AQI
48AQI
45AQI
42AQI
47AQI
45AQI
49AQI
46AQI
41AQI
35AQI
31AQI
27AQI
22AQI
22AQI
27AQI
28AQI
29AQI
28AQI
28AQI
31AQI
33AQI
34AQI
30AQI
25AQI
25AQI
32AQI
37AQI
36AQI
32AQI
31AQI
41AQI
53AQI
52AQI
46AQI
51AQI
48AQI
38AQI
31AQI
21AQI
22AQI
21AQI
26AQI
34AQI
34AQI
36AQI
35AQI
37AQI
37AQI
32AQI
39AQI
53AQI
40AQI
46AQI
59AQI
45AQI
44AQI
47AQI
57AQI
59AQI
80AQI
303AQI
64AQI
45AQI
25AQI
24AQI
23AQI
32AQI
33AQI
30AQI
27AQI
27AQI
23AQI
21AQI
20AQI
20AQI
20AQI
21AQI
36AQI
34AQI
33AQI
27AQI
27AQI
31AQI
31AQI
32AQI
20AQI
22AQI
30AQI
35AQI
42AQI
45AQI
42AQI
44AQI
31AQI
26AQI
37AQI
16AQI
15AQI
34AQI
32AQI
48AQI
55AQI
68AQI
58AQI
49AQI
35AQI
34AQI
29AQI
29AQI
33AQI
34AQI
36AQI
45AQI
36AQI
No. of days
202536AQI
Highest AQI recorded in
January49AQI
Lowest AQI recorded in
May29AQI
202428AQI
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
March13AQI
202333AQI
Highest AQI recorded in
October80AQI
Lowest AQI recorded in
January12AQI
202228AQI
Highest AQI recorded in
August81AQI
Lowest AQI recorded in
December17AQI
202137AQI
Highest AQI recorded in
August72AQI
Lowest AQI recorded in
April25AQI
202056AQI
Highest AQI recorded in
September191AQI
Lowest AQI recorded in
April17AQI
Most & Least Polluted Years Over the Last 6 Years
Mammoth Lakes's annual 2025 AQI (36) shows an average percentage change of 5.5% (worsened AQI) compared to previous years: 2020 (56), 2021 (37), 2022 (28), 2023 (33), 2024 (28).