Hiraiso, Oakashicho, Hyogo, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Hiraiso, Oakashicho, Hyogo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (13th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Feb - 13th Feb 2026
Hiraiso, Oakashicho, Hyogo, Japan
7 AM12th Feb 2026
5 PM
6 AM13th Feb 2026
60AQI
42AQI
68AQI
53AQI
In the last 24 hours,
Hiraiso's AQI reached its highest point of 68 at 9 PM during the Night, while the lowest point, 42, was recorded at 7 AM during the Day between 12th Feb and 13th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Hiraiso, Oakashicho, Hyogo, Japan
9°C6/12°C
11°C10/13°C
11°C8/13°C
7°C6/10°C
9°C5/13°C
6°C1/10°C
3°C1/6°C
2°C1/5°C
3°C1/7°C
5°C3/7°C
3°C2/6°C
3°C1/5°C
7°C4/10°C
5°C3/7°C
5°C2/8°C
4°C2/7°C
4°C2/6°C
6°C4/9°C
6°C4/8°C
5°C2/7°C
7°C5/10°C
10°C8/12°C
9°C6/13°C
5°C3/7°C
1°C-1/2°C
3°C0/6°C
7°C4/9°C
7°C6/9°C
7°C5/11°C
8°C5/11°C
48AQI
38AQI
44AQI
35AQI
2026 Days Vs Air Quality
Hiraiso, Oakashicho, Hyogo, Japan
82%
36
18%
8
Total number of days with different AQI categories in last 45 days in 2026 (320 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2026, 82% of 45 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
Hiraiso, Oakashicho, Hyogo, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI (US)
22AQI (US)
17AQI (US)
39AQI (US)
55AQI (US)
14AQI (US)
36AQI (US)
40AQI (US)
26AQI (US)
49AQI (US)
38AQI (US)
37AQI (US)
32AQI (US)
27AQI (US)
46AQI (US)
71AQI (US)
78AQI (US)
47AQI (US)
45AQI (US)
27AQI (US)
13AQI (US)
25AQI (US)
39AQI (US)
45AQI (US)
31AQI (US)
13AQI (US)
44AQI (US)
29AQI (US)
20AQI (US)
38AQI (US)
35AQI (US)
40AQI (US)
54AQI (US)
25AQI (US)
38AQI (US)
58AQI (US)
51AQI (US)
13AQI (US)
11AQI (US)
37AQI (US)
49AQI (US)
49AQI (US)
51AQI (US)
60AQI (US)
36AQI (US)
41AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
February41AQI (US)
Lowest AQI (US) recorded in
January36AQI (US)
202546AQI (US)
Highest AQI (US) recorded in
November55AQI (US)
Lowest AQI (US) recorded in
September35AQI (US)
202440AQI (US)
Highest AQI (US) recorded in
April49AQI (US)
Lowest AQI (US) recorded in
December32AQI (US)
202347AQI (US)
Highest AQI (US) recorded in
April57AQI (US)
Lowest AQI (US) recorded in
August32AQI (US)
202245AQI (US)
Highest AQI (US) recorded in
March59AQI (US)
Lowest AQI (US) recorded in
October31AQI (US)
202143AQI (US)
Highest AQI (US) recorded in
May49AQI (US)
Lowest AQI (US) recorded in
August37AQI (US)
202050AQI (US)
Highest AQI (US) recorded in
August61AQI (US)
Lowest AQI (US) recorded in
October44AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Hiraiso's annual 2026 AQI (US) (37) shows an average percentage change of -17.2% (improved AQI (US)) compared to previous years: 2020 (50), 2021 (43), 2022 (45), 2023 (47), 2024 (40), 2025 (46).