Geraldine, Timaru, Canterbury, New Zealand 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
Geraldine, Timaru, Canterbury, New Zealand
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Geraldine, Timaru, Canterbury, New Zealand
6 AM4th Oct 2025
6 PM
5 AM5th Oct 2025
AQI
AQI
55AQI
41AQI
In the last 24 hours,
Geraldine's AQI reached its highest point of 55 at 2 PM during the Night, while the lowest point, 41, was recorded at 5 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Geraldine, Timaru, Canterbury, New Zealand
11°C7/15°C
7°C4/10°C
8°C3/12°C
6°C2/12°C
8°C3/14°C
7°C3/12°C
6°C1/12°C
7°C3/14°C
8°C4/14°C
7°C3/11°C
9°C4/17°C
11°C7/14°C
13°C10/20°C
10°C6/14°C
6°C2/10°C
7°C1/14°C
10°C6/16°C
11°C7/16°C
9°C7/12°C
10°C7/15°C
7°C4/11°C
6°C3/14°C
7°C2/12°C
12°C7/19°C
9°C6/15°C
9°C3/15°C
6°C3/8°C
6°C2/9°C
8°C5/11°C
--°C/°C
--°C/°C
24AQI
19AQI
31AQI
22AQI
2025 Days Vs Air Quality
Geraldine, Timaru, Canterbury, New Zealand
84%
233
16%
44
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 277 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
Geraldine, Timaru, Canterbury, New Zealand
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
23AQI
26AQI
22AQI
27AQI
21AQI
27AQI
24AQI
23AQI
22AQI
21AQI
22AQI
21AQI
24AQI
20AQI
21AQI
21AQI
21AQI
21AQI
21AQI
23AQI
24AQI
27AQI
23AQI
24AQI
24AQI
23AQI
23AQI
27AQI
29AQI
30AQI
27AQI
25AQI
25AQI
29AQI
28AQI
29AQI
27AQI
28AQI
27AQI
26AQI
25AQI
24AQI
24AQI
25AQI
23AQI
27AQI
31AQI
24AQI
25AQI
21AQI
21AQI
21AQI
21AQI
27AQI
23AQI
26AQI
24AQI
24AQI
36AQI
36AQI
32AQI
29AQI
24AQI
26AQI
29AQI
22AQI
23AQI
24AQI
30AQI
21AQI
23AQI
21AQI
22AQI
24AQI
18AQI
22AQI
17AQI
22AQI
25AQI
28AQI
26AQI
22AQI
23AQI
23AQI
29AQI
20AQI
30AQI
25AQI
32AQI
29AQI
27AQI
25AQI
25AQI
27AQI
24AQI
21AQI
25AQI
27AQI
27AQI
27AQI
27AQI
31AQI
29AQI
27AQI
27AQI
26AQI
25AQI
32AQI
23AQI
30AQI
23AQI
35AQI
35AQI
41AQI
48AQI
42AQI
42AQI
35AQI
33AQI
23AQI
30AQI
32AQI
35AQI
41AQI
49AQI
40AQI
31AQI
31AQI
33AQI
36AQI
43AQI
38AQI
42AQI
35AQI
44AQI
38AQI
36AQI
37AQI
43AQI
41AQI
53AQI
48AQI
59AQI
49AQI
49AQI
53AQI
46AQI
43AQI
40AQI
47AQI
53AQI
51AQI
71AQI
50AQI
49AQI
39AQI
36AQI
30AQI
40AQI
51AQI
55AQI
47AQI
46AQI
61AQI
64AQI
71AQI
78AQI
74AQI
72AQI
71AQI
71AQI
84AQI
85AQI
96AQI
77AQI
75AQI
70AQI
69AQI
71AQI
66AQI
75AQI
71AQI
68AQI
67AQI
65AQI
60AQI
64AQI
61AQI
65AQI
68AQI
63AQI
59AQI
61AQI
62AQI
50AQI
51AQI
51AQI
50AQI
50AQI
43AQI
40AQI
47AQI
39AQI
39AQI
40AQI
52AQI
47AQI
49AQI
41AQI
37AQI
40AQI
28AQI
36AQI
36AQI
37AQI
32AQI
35AQI
39AQI
30AQI
30AQI
35AQI
29AQI
29AQI
31AQI
28AQI
26AQI
22AQI
28AQI
25AQI
24AQI
24AQI
23AQI
25AQI
23AQI
28AQI
28AQI
26AQI
23AQI
20AQI
18AQI
23AQI
18AQI
24AQI
21AQI
18AQI
19AQI
22AQI
31AQI
30AQI
24AQI
23AQI
24AQI
25AQI
23AQI
21AQI
21AQI
23AQI
29AQI
21AQI
20AQI
23AQI
20AQI
18AQI
18AQI
18AQI
25AQI
18AQI
15AQI
28AQI
23AQI
11AQI
12AQI
9AQI
38AQI
53AQI
53AQI
24AQI
25AQI
25AQI
30AQI
41AQI
62AQI
54AQI
28AQI
22AQI
38AQI
No. of days
202535AQI
Highest AQI recorded in
June62AQI
Lowest AQI recorded in
September22AQI
202432AQI
Highest AQI recorded in
June55AQI
Lowest AQI recorded in
January19AQI
202330AQI
Highest AQI recorded in
June51AQI
Lowest AQI recorded in
October19AQI
202230AQI
Highest AQI recorded in
August84AQI
Lowest AQI recorded in
December20AQI
202136AQI
Highest AQI recorded in
April61AQI
Lowest AQI recorded in
December21AQI
Most & Least Polluted Years Over the Last 5 Years
Geraldine's annual 2025 AQI (35) shows an average percentage change of 8.2% (worsened AQI) compared to previous years: 2021 (36), 2022 (30), 2023 (30), 2024 (32).