Anaconda, Montana, 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
Anaconda, Montana, United States
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 12 of Good air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Anaconda, Montana, United States
7 AM2nd Oct 2025
7 PM
6 AM3rd Oct 2025
28AQI
6AQI
12AQI
5AQI
In the last 24 hours,
Anaconda's AQI reached its highest point of 28 at 5 PM during the Day, while the lowest point, 5, was recorded at 5 AM during the Night between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Anaconda, Montana, United States
20°C6/32°C
19°C7/30°C
18°C10/27°C
20°C12/29°C
17°C11/27°C
15°C5/25°C
12°C3/26°C
13°C1/25°C
13°C2/24°C
11°C-1/21°C
14°C4/22°C
14°C5/24°C
11°C2/18°C
12°C0/21°C
14°C0/24°C
14°C1/26°C
16°C3/26°C
18°C10/27°C
15°C5/27°C
14°C8/22°C
13°C4/24°C
15°C6/26°C
17°C7/28°C
16°C8/24°C
15°C4/26°C
17°C7/28°C
18°C11/28°C
15°C10/21°C
16°C11/23°C
15°C9/23°C
--°C/°C
32AQI
27AQI
32AQI
26AQI
2025 Days Vs Air Quality
Anaconda, Montana, United States
93%
256
7%
19
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 276 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
Anaconda, Montana, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI
37AQI
53AQI
58AQI
46AQI
42AQI
38AQI
43AQI
60AQI
47AQI
55AQI
51AQI
42AQI
39AQI
46AQI
49AQI
35AQI
34AQI
39AQI
37AQI
41AQI
51AQI
37AQI
55AQI
41AQI
38AQI
40AQI
47AQI
47AQI
46AQI
63AQI
42AQI
50AQI
27AQI
60AQI
30AQI
37AQI
33AQI
37AQI
56AQI
50AQI
33AQI
51AQI
49AQI
37AQI
22AQI
22AQI
27AQI
23AQI
24AQI
31AQI
22AQI
32AQI
24AQI
16AQI
13AQI
27AQI
28AQI
28AQI
26AQI
22AQI
30AQI
29AQI
16AQI
17AQI
14AQI
18AQI
27AQI
18AQI
15AQI
20AQI
22AQI
17AQI
18AQI
15AQI
17AQI
19AQI
18AQI
16AQI
16AQI
15AQI
20AQI
18AQI
21AQI
23AQI
19AQI
23AQI
15AQI
17AQI
21AQI
18AQI
25AQI
18AQI
19AQI
24AQI
25AQI
23AQI
15AQI
21AQI
32AQI
28AQI
18AQI
20AQI
25AQI
24AQI
25AQI
18AQI
20AQI
22AQI
17AQI
14AQI
17AQI
19AQI
22AQI
19AQI
18AQI
18AQI
21AQI
15AQI
15AQI
20AQI
20AQI
22AQI
15AQI
14AQI
15AQI
19AQI
19AQI
20AQI
18AQI
17AQI
22AQI
19AQI
21AQI
15AQI
14AQI
16AQI
14AQI
17AQI
13AQI
16AQI
14AQI
15AQI
18AQI
21AQI
19AQI
21AQI
19AQI
19AQI
17AQI
18AQI
22AQI
14AQI
16AQI
17AQI
16AQI
18AQI
22AQI
20AQI
21AQI
21AQI
23AQI
22AQI
21AQI
19AQI
20AQI
21AQI
23AQI
19AQI
18AQI
21AQI
17AQI
16AQI
18AQI
27AQI
23AQI
20AQI
23AQI
18AQI
17AQI
18AQI
22AQI
25AQI
24AQI
23AQI
32AQI
19AQI
19AQI
20AQI
19AQI
20AQI
20AQI
22AQI
29AQI
22AQI
33AQI
23AQI
27AQI
36AQI
35AQI
37AQI
36AQI
26AQI
22AQI
29AQI
47AQI
24AQI
19AQI
18AQI
19AQI
21AQI
22AQI
37AQI
41AQI
27AQI
25AQI
22AQI
19AQI
26AQI
16AQI
16AQI
16AQI
18AQI
21AQI
26AQI
31AQI
33AQI
35AQI
34AQI
25AQI
22AQI
41AQI
39AQI
47AQI
44AQI
56AQI
56AQI
56AQI
42AQI
42AQI
47AQI
50AQI
53AQI
50AQI
46AQI
50AQI
55AQI
75AQI
61AQI
60AQI
39AQI
40AQI
46AQI
23AQI
22AQI
19AQI
21AQI
18AQI
16AQI
22AQI
22AQI
21AQI
19AQI
19AQI
15AQI
15AQI
18AQI
34AQI
36AQI
41AQI
24AQI
25AQI
18AQI
12AQI
12AQI
45AQI
33AQI
19AQI
21AQI
18AQI
20AQI
25AQI
34AQI
32AQI
12AQI
No. of days
202527AQI
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
October12AQI
202435AQI
Highest AQI recorded in
January57AQI
Lowest AQI recorded in
May13AQI
202329AQI
Highest AQI recorded in
January53AQI
Lowest AQI recorded in
September13AQI
202240AQI
Highest AQI recorded in
August107AQI
Lowest AQI recorded in
May17AQI
202142AQI
Highest AQI recorded in
July82AQI
Lowest AQI recorded in
May17AQI
202037AQI
Highest AQI recorded in
December61AQI
Lowest AQI recorded in
May17AQI
Most & Least Polluted Years Over the Last 6 Years
Anaconda's annual 2025 AQI (27) shows an average percentage change of -24.09% (improved AQI) compared to previous years: 2020 (37), 2021 (42), 2022 (40), 2023 (29), 2024 (35).