Hamamatsu air quality now

Japan · The summary is refreshed every 15 minutes.

November 12

The air is clean now

Measured 05:00

Hamamatsu

10°C

Clear

29AQI

1028

hPa

Atmospheric
pressure

77%

Humidity

Hamamatsu, November 10, 2026: daily mean PM2.5 4 µg/m³ (9 sensors), level “Low” — as in the Atmy Data Hub. Now (07:00 local time): 5.2 µg/m³. Open methodology and data in JSON: Methodology and data sources · JSON

Right now in Hamamatsu, PM2.5 averages 5.2 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 9 sensors from Government stations, readings from 05:00–05:00 local time (20:00–20:00 UTC), summary prepared at 07:00 local time. Median: 5.0 µg/m³; range across sensors: 3.0–7.0 µg/m³.

In Hamamatsu the air is good 🟢 AQI 29. About the same as three hours ago. ☀️ +10 °C · No precipitation · Wind 2 m/s

In Hamamatsu the air is good right now (approximate, US EPA scale). From 18:00 to 07:00 local time the city mean PM2.5 fell from 6.9 to 5.2 µg/m³.

The weather data do not point to a clear reason for this level.

Weather now: clear, 10°C, wind 2 m/s, humidity 77%. No major change in the wind is expected in the coming hours. By 18:00 the temperature will be about 16°C.

Written automatically at 07:00 local time (22:00 UTC) from sensor measurements and the weather forecast. Values are approximate; hypotheses are marked.

2 m/s

Wind, N

0 mm

Precipitation today

Hamamatsu: air quality for the completed day

Metric: PM2.5, µg/m³ · Color scale: EPA AQI · November 10, 2026 · 00:00–24:00 UTC = 09:00–09:00 UTC+9

4 µg/m³ Low

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 09:00–09:00 UTC+9): 4 µg/m³ from 9 sensors that passed the quality check — the same value as in the Atmy Data Hub.

No. 29 of 43 cities in Japan and No. 650 of 676 worldwide, from the most polluted.

LowModerateElevatedHighVery highExtremely high

Pollution accumulation index now

42/100Moderate · An estimate of weather conditions · not a PM2.5 forecast

Now4238
07.0015.0022.0006.00

Pollution accumulation forecast

Today — November 12

18°/10°

Index by time of day

54/100Moderate

  1. 54/100Night
  2. 42/100Morning
  3. 8/100Day
  4. 24/100Evening

Friday — November 13

19°/12°

Index by time of day

52/100Moderate

  1. 52/100Night
  2. 38/100Morning
  3. 10/100Day
  4. 25/100Evening

Saturday — November 14

20°/12°

Index by time of day

57/100Moderate

  1. 57/100Night
  2. 43/100Morning
  3. 9/100Day
  4. 20/100Evening

Sunday — November 15

19°/11°

Index by time of day

49/100Moderate

  1. 49/100Night
  2. 36/100Morning
  3. 10/100Day
  4. 21/100Evening

Monday — November 16

21°/14°

Index by time of day

49/100Moderate

  1. 49/100Night
  2. 38/100Morning
  3. 10/100Day
  4. 21/100Evening

Tuesday — November 17

16°/13°

Index by time of day

33/100Low

  1. 33/100Night
  2. 26/100Morning
  3. 7/100Day
  4. 17/100Evening

Forecast of conditions that trap pollution near the surface

Weather

10°

Clear. Feels like 9°C

  1. MorningClear14°C69%
  2. DayClear18°C60%
  3. EveningClear14°C80%

Wind

2m/sWind from the N

5m/sWind gusts

Wind force: 2

Gusts up to 8 m/s are expected.

10-day weather forecast for Hamamatsu

Japan

  1. TodayNov 12Partly cloudy18°C10°C
  2. FriNov 13Rain19°C12°C
  3. SatNov 14Cloudy20°C12°C
  4. SunNov 15Rain19°C11°C
  5. MonNov 16Rain21°C14°C
  6. TueNov 17Rain16°C13°C
  7. WedNov 18Rain20°C13°C
  8. ThuNov 19Partly cloudy15°C7°C
  9. FriNov 20Partly cloudy12°C6°C
  10. SatNov 21Partly cloudy15°C5°C

Where in Hamamatsu is the air worse?

See all sensors

Highest current reading: 7.0 µg/m³ (北部測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市)). Lowest: 3.0 µg/m³ (浜北測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市)). The list shows every sensor, highest first.

  1. 北部測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →7 µg/m³
  2. Ｒ－１５０ (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →6 µg/m³
  3. 浜松中央測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →6 µg/m³
  4. Ｒ－２５７ (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →6 µg/m³
  5. 西部測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →5 µg/m³
  6. 東南部測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →5 µg/m³
  7. 浜松環状線 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →5 µg/m³
  8. 三ヶ日 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →4 µg/m³
  9. 浜北測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市) →3 µg/m³

Source: atmy.ai monitoring network

Who provides the data

Sensors in the summary by network: Government stations — 9 sensors.

Atmy shows the networks’ readings after the Data Hub’s quality check: test devices and sensors that fail it are left out.

Japan: sensors in total

921

  1. TokyoJapan

    49

  2. NagoyaJapan

    18

  3. KobeJapan

    16

Cities with the most sensors

All sensors on the map, by city as the map assigns them; the city’s values count only the sensors that pass the Data Hub’s quality check.

Air quality calendar: Hamamatsu

Daily mean PM2.5 of the city sensors, µg/m³

Click a day to see its date and value.

LowModerateElevatedHighVery highExtremely high

Widget for your site

An Atmy card with the air quality in Hamamatsu now: it is refreshed every 15 minutes and links to this page. Paste the code into your site.

Air quality in Hamamatsu now — Atmy

Japan · City ranking · All pilot cities

Questions

What was the air quality in Hamamatsu over the last completed day?

Daily mean PM2.5 on November 10, 2026 (00:00–24:00 UTC = 09:00–09:00 UTC+9): 4 µg/m³ from 9 sensors that passed the quality check — the same value as in the Atmy Data Hub. No. 29 of 43 cities in Japan and No. 650 of 676 worldwide, from the most polluted.

What is the air quality in Hamamatsu right now?

Right now in Hamamatsu, PM2.5 averages 5.2 µg/m³ — “good” on the US EPA scale (approximate, from hourly readings). Mean of 9 sensors from Government stations, readings from 05:00–05:00 local time (20:00–20:00 UTC), summary prepared at 07:00 local time. Median: 5.0 µg/m³; range across sensors: 3.0–7.0 µg/m³.

Is it safe to be outdoors in Hamamatsu now?

The current level is “good” (US EPA scale, approximate). Air quality is satisfactory; no restrictions are recommended. This is the standard guidance of the scale, not medical advice.

Where in Hamamatsu is the air worse?

Highest current reading: 7.0 µg/m³ (北部測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市)). Lowest: 3.0 µg/m³ (浜北測定局 (環境省 大気汚染物質広域監視システム（そらまめくん） — 浜松市)). The list shows every sensor, highest first.

Where do these data come from?

From Atmy sensors and connected public networks (citizen, experimental and government monitors), aggregated by Atmy. Values are approximate; see the methodology.

How often is this page updated?

The summary is rebuilt every 15 minutes from the latest reading of each sensor, each no older than one hour.

Data

Where do these data come from?

The daily value is the Data Hub’s: the mean of the city’s sensors that passed the nightly quality check, each with at least 12 valid hours, and only with sensors at four places 500 m apart; days are UTC.

“Now” uses the same sensors and rule: the mean of their latest readings, each at most 60 minutes old, shown only with sensors at four places 500 m apart reporting.

Source: public Atmy monitoring data. Methodology and data sources · Data terms