Perth Crieff, Crieff, Perth And Kinross, United Kingdom 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
Perth Crieff, Crieff, Perth And Kinross, United Kingdom
AQI Trends: Highest and Lowest
Same Day Analysis (20th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 19 of Good air quality, showing improvement over 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Perth Crieff, Crieff, Perth And Kinross, United Kingdom
6 AM20th Sep 2025
7 PM
5 AM21st Sep 2025
25AQI
14AQI
20AQI
16AQI
In the last 24 hours,
Perth Crieff's AQI reached its highest point of 25 at 6 AM during the Day, while the lowest point, 14, was recorded at 4 PM during the Day between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Perth Crieff, Crieff, Perth And Kinross, United Kingdom
11°C6/15°C
12°C10/16°C
16°C11/21°C
16°C9/22°C
14°C10/18°C
12°C8/19°C
12°C8/15°C
12°C9/15°C
13°C9/17°C
13°C10/17°C
13°C11/15°C
12°C9/16°C
11°C9/13°C
12°C8/18°C
11°C6/16°C
12°C7/18°C
15°C11/19°C
11°C5/16°C
10°C5/16°C
12°C8/15°C
10°C8/12°C
10°C7/14°C
9°C6/12°C
8°C3/12°C
12°C9/15°C
11°C7/15°C
10°C8/13°C
13°C10/16°C
13°C7/16°C
9°C4/13°C
--°C/°C
21AQI
19AQI
21AQI
19AQI
2025 Days Vs Air Quality
Perth Crieff, Crieff, Perth And Kinross, United Kingdom
95%
249
5%
14
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 264 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
Perth Crieff, Crieff, Perth And Kinross, United Kingdom
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
29AQI
35AQI
45AQI
36AQI
23AQI
22AQI
26AQI
25AQI
35AQI
57AQI
53AQI
28AQI
26AQI
25AQI
25AQI
24AQI
33AQI
45AQI
38AQI
33AQI
34AQI
28AQI
24AQI
24AQI
23AQI
23AQI
22AQI
24AQI
26AQI
35AQI
38AQI
25AQI
21AQI
21AQI
23AQI
30AQI
33AQI
24AQI
38AQI
28AQI
38AQI
32AQI
25AQI
37AQI
54AQI
32AQI
52AQI
53AQI
81AQI
37AQI
26AQI
24AQI
24AQI
26AQI
24AQI
24AQI
26AQI
26AQI
31AQI
27AQI
31AQI
25AQI
24AQI
41AQI
30AQI
63AQI
78AQI
42AQI
26AQI
22AQI
28AQI
26AQI
30AQI
23AQI
25AQI
34AQI
51AQI
65AQI
89AQI
69AQI
66AQI
40AQI
23AQI
28AQI
23AQI
18AQI
23AQI
25AQI
24AQI
31AQI
31AQI
33AQI
39AQI
39AQI
29AQI
27AQI
30AQI
37AQI
34AQI
42AQI
43AQI
23AQI
15AQI
17AQI
15AQI
21AQI
18AQI
17AQI
16AQI
21AQI
17AQI
22AQI
24AQI
24AQI
37AQI
21AQI
23AQI
25AQI
25AQI
34AQI
21AQI
18AQI
15AQI
19AQI
19AQI
21AQI
20AQI
20AQI
25AQI
33AQI
36AQI
33AQI
34AQI
30AQI
33AQI
30AQI
27AQI
30AQI
30AQI
27AQI
20AQI
19AQI
16AQI
14AQI
14AQI
15AQI
14AQI
14AQI
14AQI
14AQI
13AQI
18AQI
22AQI
19AQI
18AQI
15AQI
18AQI
15AQI
53AQI
40AQI
32AQI
46AQI
33AQI
24AQI
19AQI
22AQI
28AQI
21AQI
19AQI
26AQI
25AQI
26AQI
17AQI
16AQI
15AQI
15AQI
16AQI
19AQI
22AQI
17AQI
16AQI
17AQI
16AQI
17AQI
16AQI
16AQI
16AQI
24AQI
16AQI
16AQI
18AQI
20AQI
18AQI
22AQI
22AQI
22AQI
24AQI
19AQI
20AQI
24AQI
22AQI
17AQI
32AQI
40AQI
41AQI
28AQI
26AQI
19AQI
18AQI
16AQI
17AQI
18AQI
19AQI
22AQI
22AQI
23AQI
26AQI
22AQI
23AQI
21AQI
22AQI
23AQI
26AQI
44AQI
44AQI
36AQI
34AQI
29AQI
26AQI
26AQI
21AQI
19AQI
20AQI
19AQI
25AQI
27AQI
21AQI
24AQI
22AQI
19AQI
19AQI
21AQI
21AQI
21AQI
21AQI
17AQI
25AQI
17AQI
25AQI
20AQI
21AQI
22AQI
19AQI
18AQI
16AQI
16AQI
16AQI
16AQI
17AQI
19AQI
16AQI
19AQI
31AQI
33AQI
37AQI
27AQI
23AQI
23AQI
21AQI
25AQI
19AQI
No. of days
202527AQI
Highest AQI recorded in
March37AQI
Lowest AQI recorded in
September19AQI
202425AQI
Highest AQI recorded in
May37AQI
Lowest AQI recorded in
July15AQI
202322AQI
Highest AQI recorded in
May28AQI
Lowest AQI recorded in
August14AQI
202223AQI
Highest AQI recorded in
March39AQI
Lowest AQI recorded in
July14AQI
202120AQI
Highest AQI recorded in
December26AQI
Lowest AQI recorded in
October13AQI
202015AQI
Highest AQI recorded in
April24AQI
Lowest AQI recorded in
July8AQI
Most & Least Polluted Years Over the Last 6 Years
Perth Crieff's annual 2025 AQI (27) shows an average percentage change of 31.9% (worsened AQI) compared to previous years: 2020 (15), 2021 (20), 2022 (23), 2023 (22), 2024 (25).