Air Quality in Shimo-tsuma, Japan

Heavy Rain
22.0°C · 97.3% humidity
22.0°
Feels 22.0°
65
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
8 stations

Nearby Monitoring Stations

AQI Forecast
66 6am
66
66
65 9am
62
60
58 12pm
57
56
55 3pm
55
67
67 6pm
54
54
54 9pm
66
66
66 12am
66
83
83 3am
84
84
AD 728×90

Air Quality Index Trend

47h · 21 stn

Shimo-tsuma'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 Shimo-tsuma is 1.3× the WHO 24-hour guideline of 15 µg/m³.

97.3%
Humidity
39.3 km/h
Wind N
1002.3 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
65
18.8 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Shimo-tsuma?

Temperature & Precipitation

PM2.5 Trend

47h · 21 stations
PM2.518.8 µg/m³ ×1.3 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (8 stations within 25 km)
18.8
Median
18.31
Average
10.1
Low
26.8
High
PM2.5 µg/m³ · Model: 16.35 · Bias: -2.5

What is the 7-day forecast for Shimo-tsuma?

07-22
25.3° 22.0°
14.31 mm
07-23
27.6° 19.9°
0.06 mm
07-24
28.9° 22.7°
0.13 mm
07-25
33.0° 22.0°
0.06 mm
07-26
31.9° 21.9°
0.44 mm
07-27
31.7° 23.6°
9.31 mm
07-28
30.1° 24.1°
3.38 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Shimo-tsuma?

26
Shimotsumaotsu, Shimotsuma-shi, Ibaraki-ken, Japan (下妻下妻市)
0.6 km PM2.5: 6.2 µg/m³
76
Shimotsumaotsu, Shimotsuma-shi, Ibaraki-ken, Japan (下妻下妻市)
0.6 km PM2.5: 24.0 µg/m³
61
Mitsukaido Morishitamachi, Joso, Ibaraki, Japan (常総保健所常総市)
16.7 km PM2.5: 16.9 µg/m³
76
Shimoono, Koga, Ibaraki, Japan (古河市役所古河市)
19.9 km PM2.5: 24.0 µg/m³
34
Kirigasaku, Noda, Chiba, Japan (野田桐ケ作野田市)
20.3 km PM2.5: 8.2 µg/m³
23
Shimotakatsu, Tsuchiura, Ibaraki, Japan (土浦保健所土浦市)
23.7 km PM2.5: 5.5 µg/m³
57
Shimotakatsu, Tsuchiura, Ibaraki, Japan (土浦保健所土浦市)
23.7 km PM2.5: 15.0 µg/m³
65
Nakamuraminami, Tsuchiura-shi, Ibaraki-ken, Japan (土浦中村南土浦市)
23.8 km PM2.5: 18.8 µg/m³
20
Nakamuraminami, Tsuchiura-shi, Ibaraki-ken, Japan (土浦中村南土浦市)
23.8 km PM2.5: 4.8 µg/m³
53
Gakuendai, Saitama-ken, Japan (宮代南埼玉郡宮代町)
28.8 km PM2.5: 13.1 µg/m³

What cities are near Shimo-tsuma?

63 Yachiyo 65 Ishige 57 Shimodate 53 Chikusei 54 Yūki 67 Makabe 66 Bandō 63 Iwai 63 Jōsō 65 Tsukuba
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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 2026-07-22T00:21 UTC.