Tempe, Tempe, Arizona, United States Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Tempe, Tempe, Arizona, United States
AQI Trends: Highest and Lowest
Same Day Analysis (4th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 411 of Hazardous air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Sep - 4th Sep 2025
Tempe, Tempe, Arizona, United States
5 AM3rd Sep 2025
7 PM
4 AM4th Sep 2025
60AQI
39AQI
1886AQI
28AQI
In the last 24 hours,
Tempe's AQI reached its highest point of 1886 at 12 AM during the Night, while the lowest point, 28, was recorded at 10 PM during the Night between 3rd Sep and 4th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Tempe, Tempe, Arizona, United States
39°C30/48°C
40°C31/49°C
41°C30/50°C
38°C30/46°C
37°C31/45°C
37°C30/44°C
37°C30/45°C
37°C31/44°C
38°C30/45°C
37°C29/44°C
36°C29/41°C
35°C29/42°C
35°C28/42°C
35°C27/44°C
36°C29/44°C
38°C30/47°C
39°C32/47°C
39°C33/46°C
37°C32/45°C
38°C31/45°C
36°C31/42°C
32°C26/38°C
34°C29/40°C
35°C29/42°C
35°C29/41°C
35°C28/43°C
36°C27/45°C
35°C29/43°C
36°C31/44°C
35°C29/42°C
--°C/°C
69AQI
38AQI
112AQI
39AQI
2025 Days Vs Air Quality
Tempe, Tempe, Arizona, United States
86%
212
13%
31
0.4%
1
0.8%
2
0.4%
1
Total number of days with different AQI categories in last 247 days in 2025 (118 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% of 247 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
Tempe, Tempe, Arizona, United States
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
175AQI
59AQI
57AQI
56AQI
53AQI
52AQI
50AQI
60AQI
39AQI
32AQI
51AQI
56AQI
50AQI
55AQI
30AQI
29AQI
35AQI
55AQI
53AQI
57AQI
42AQI
44AQI
45AQI
35AQI
45AQI
54AQI
45AQI
31AQI
40AQI
43AQI
57AQI
68AQI
61AQI
41AQI
43AQI
39AQI
36AQI
40AQI
38AQI
44AQI
45AQI
52AQI
60AQI
35AQI
27AQI
33AQI
38AQI
42AQI
38AQI
44AQI
44AQI
35AQI
37AQI
43AQI
47AQI
43AQI
42AQI
42AQI
43AQI
52AQI
31AQI
36AQI
42AQI
44AQI
46AQI
32AQI
29AQI
39AQI
33AQI
35AQI
26AQI
24AQI
20AQI
20AQI
30AQI
28AQI
26AQI
19AQI
22AQI
29AQI
35AQI
35AQI
30AQI
29AQI
32AQI
36AQI
28AQI
38AQI
40AQI
28AQI
29AQI
45AQI
26AQI
25AQI
20AQI
19AQI
31AQI
37AQI
37AQI
36AQI
36AQI
36AQI
32AQI
35AQI
30AQI
23AQI
34AQI
28AQI
20AQI
20AQI
31AQI
27AQI
22AQI
22AQI
30AQI
23AQI
22AQI
23AQI
28AQI
22AQI
37AQI
29AQI
35AQI
28AQI
26AQI
23AQI
23AQI
26AQI
26AQI
37AQI
36AQI
37AQI
29AQI
38AQI
30AQI
32AQI
31AQI
38AQI
32AQI
32AQI
37AQI
41AQI
32AQI
30AQI
27AQI
28AQI
28AQI
33AQI
36AQI
28AQI
32AQI
32AQI
26AQI
24AQI
24AQI
25AQI
25AQI
27AQI
31AQI
34AQI
34AQI
30AQI
35AQI
36AQI
36AQI
37AQI
64AQI
39AQI
38AQI
40AQI
33AQI
31AQI
32AQI
27AQI
34AQI
27AQI
37AQI
36AQI
39AQI
32AQI
48AQI
157AQI
59AQI
47AQI
38AQI
48AQI
43AQI
37AQI
49AQI
38AQI
38AQI
40AQI
44AQI
36AQI
45AQI
35AQI
67AQI
39AQI
27AQI
25AQI
25AQI
34AQI
33AQI
23AQI
32AQI
28AQI
28AQI
25AQI
28AQI
32AQI
33AQI
33AQI
27AQI
27AQI
27AQI
34AQI
39AQI
41AQI
40AQI
37AQI
46AQI
100AQI
54AQI
57AQI
46AQI
55AQI
37AQI
33AQI
29AQI
29AQI
32AQI
38AQI
58AQI
102AQI
46AQI
52AQI
88AQI
39AQI
31AQI
35AQI
25AQI
22AQI
28AQI
58AQI
36AQI
84AQI
411AQI
51AQI
43AQI
32AQI
28AQI
32AQI
34AQI
41AQI
44AQI
147AQI
No. of days
202540AQI
Highest AQI recorded in
September147AQI
Lowest AQI recorded in
April28AQI
202440AQI
Highest AQI recorded in
December54AQI
Lowest AQI recorded in
March32AQI
202340AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
March33AQI
202240AQI
Highest AQI recorded in
March45AQI
Lowest AQI recorded in
October32AQI
202141AQI
Highest AQI recorded in
November50AQI
Lowest AQI recorded in
March36AQI
202039AQI
Highest AQI recorded in
December45AQI
Lowest AQI recorded in
April32AQI
Most & Least Polluted Years Over the Last 6 Years
Tempe's annual 2025 AQI (40) shows an average percentage change of -0.8% (improved AQI) compared to previous years: 2020 (39), 2021 (41), 2022 (40), 2023 (40), 2024 (40).