Air Quality in Ōi, Japan

Drizzle
23.7°C · 83.6% humidity
23.7°
Feels 23.7°
64
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
29 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
69 7am
52
52
64 10am
57
52
49 1pm
46
45
43 4pm
54
54
53 7pm
53
53
69 10pm
70
70
132 1am
132
132
132 4am
132
132
Station readings
10
CAMS model adj -14
83
66
66
54
54
54
54
54
54
54
66
66
66
66
66
83
84
84
146
146
146
146
146
146
AD 728×90

Air Quality Index Trend

6h · 1 stn

Ōi's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions. Current PM2.5 concentration in Ōi is 1.2× the WHO 24-hour guideline of 15 µg/m³.

83.6%
Humidity
54.5 km/h
Wind NNW
1002.6 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
64
18.17 µg/m³
PM10
56
66.15 µg/m³
050100150200300500

What is the weather forecast for Ōi?

Temperature & Precipitation

PM2.5 Trend

6h · 1 station
PM2.518.17 µg/m³ ×1.2 WHO
Moderate
PM1066.15 µg/m³
Moderate
UV INDEX24.9
Extreme
AD 300×250
Station readings (29 stations within 25 km)
18.17
Median
17.43
Average
3.8
Low
24.0
High
PM2.5 µg/m³ · Model: 20.75 · Bias: +2.6

What is the 7-day forecast for Ōi?

07-22
30.2° 23.7°
3.0 mm
07-23
27.8° 22.1°
0.56 mm
07-24
29.8° 23.6°
1.56 mm
07-25
32.9° 23.6°
07-26
30.3° 26.1°
0.13 mm
07-27
33.3° 24.9°
9.94 mm
07-28
29.6° 26.3°
12.63 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Ōi?

42
Tsuruma, Fujimi-shi, Saitama-ken, Japan (富士見富士見市)
2.7 km PM2.5: 10.1 µg/m³
21
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
5.3 km PM2.5: 5.0 µg/m³
25
Higashitokorozawa, Tokorozawa, Saitama, Japan (所沢市東所沢所沢市)
5.3 km PM2.5: 6.0 µg/m³
38
Sunashinden, Kawagoe-shi, Saitama-ken, Japan (川越市高階川越市)
5.3 km PM2.5: 9.1 µg/m³
38
Sunashinden, Kawagoe-shi, Saitama-ken, Japan (川越市高階川越市)
5.3 km PM2.5: 9.1 µg/m³
40
Horigane, Sayama-shi, Saitama-ken, Japan (狭山狭山市)
6.4 km PM2.5: 9.6 µg/m³
34
Horigane, Sayama-shi, Saitama-ken, Japan (狭山狭山市)
6.4 km PM2.5: 8.2 µg/m³
17
Senbamachi, Kawagoe, Saitama, Japan (川越市仙波川越市)
6.6 km PM2.5: 4.1 µg/m³
25
Senbamachi, Kawagoe, Saitama, Japan (川越市仙波川越市)
6.6 km PM2.5: 6.0 µg/m³
13
Honda, Niiza-shi, Saitama-ken, Japan (新座新座市)
8.5 km PM2.5: 3.1 µg/m³

What cities are near Ōi?

65 Kamifukuoka 64 Miyoshidai 64 Niiza 68 Fujimino 64 Shiki 68 Kawagoe 63 Tokorozawa 64 Kiyose 74 Sashiōgi 64 Akitsu
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-22T01:12 UTC.