AirNow by Skymory

Japan · Asia/Tokyo

Osaka air quality

63

Moderate

CAMS model-based US AQI estimate

Highest pollutant sub-index: PM2.5

Model values for Oct 02 16:00 JST · CAMS model estimate, may differ from monitoring stations and street-level conditions

Data may be delayed

AirNow by Skymory is an independent service; it is not affiliated with or endorsed by U.S. EPA or the official AirNow service.

Pollutants now (modeled)

  • PM2.5Fine particles9.7 µg/m³
  • PM10Coarse particles14.0 µg/m³
  • O3Ozone82.2 µg/m³
  • NO2Nitrogen dioxide5.7 µg/m³
  • SO2Sulphur dioxide4.3 µg/m³
  • COCarbon monoxide174.3 µg/m³

Next 24 hours: PM2.5

Modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 9.7 to 16.3. Forecast, not observations.Oct 02 17:00 JSTOct 03 16:00 JST
Modeled PM2.5 forecast (µg/m³) · 9.7–16.3; actual sample times, no interpolated hourly values.

Pollutant forecast

Hourly model samples in local time; no interpolation.

Local timePM2.5 µg/m³PM10 µg/m³O3 µg/m³NO2 µg/m³SO2 µg/m³CO µg/m³
10.814.974.19.34.7185.7
12.116.267.113.35.8196.9
13.818.060.417.07.5206.2
14.719.158.717.38.0204.8
15.119.959.216.27.9199.0
14.920.060.914.17.3192.1
15.020.260.313.26.8189.9
15.319.556.214.26.5193.6
13.517.055.813.46.7189.4
12.115.255.612.76.8186.0
10.713.654.712.27.0184.2
9.712.654.112.17.2183.8
9.712.550.313.67.5188.6
11.814.544.318.38.8208.1
16.318.939.920.610.7250.9
13.116.653.314.911.8216.9
12.516.562.810.910.7200.1
12.416.570.08.99.5190.3
12.316.777.37.58.3182.4
12.116.682.66.87.2176.2
11.816.385.96.16.2172.2
11.616.086.96.15.7169.9
11.716.086.36.45.5169.6
12.216.583.08.05.6173.7
Data details: about this air quality estimate

Values are modeled by the Copernicus Atmosphere Monitoring Service (CAMS) global forecast, extracted and converted by Skymory for this city. They are model estimates on a coarse grid, not measurements from monitoring stations, and they do not resolve street-level exposure.

  • Model initialization: 2026-10-01T12:00:00+00:00. Values valid: Oct 02 16:00 JST. Retrieved: 2026-10-02T04:51:58.348262+00:00.
  • Page generated from a snapshot with data state STALE_USABLE; model age 19.9 hours at generation.
  • Nearest valid 0.4° model grid cell, about 15 km from the city point.
  • Gases are converted with matching model-level 137 temperature, humidity, surface pressure (lnsp) and hybrid coefficients; particulate matter is read directly from the surface fields.
  • AQI estimate completeness: COMPLETE (COMPLETE means all six pollutants have a complete model window).

The AQI estimate applies EPA breakpoints (May 2026) to explicit trailing model windows (PM 24 h, CO 8 h, NO2 1 h, SO2 and O3 per EPA rules). It is not a station observation, official daily maximum or NowCast, and the official AQI field remains unavailable.

Averaging windows used

  • CO: 8h window
  • NO2: 1h window
  • O3: 1h, 8h window
  • PM10: 24h window
  • PM2.5: 24h window
  • SO2: 1h, 24h window

Surface compatibility by pollutant

PollutantSurface compatibility
PM2.5DIRECT_SURFACE
PM10DIRECT_SURFACE
O3DERIVABLE_SURFACE
NO2DERIVABLE_SURFACE
SO2DERIVABLE_SURFACE
CODERIVABLE_SURFACE

Source and license

Contains modified Copernicus Atmosphere Monitoring Service information 2026; city extraction and concentration conversion. CAMS global atmospheric composition forecasts (ECMWF/CAMS). CC BY 4.0.

Provider times stay separate from page generation: collecting data or regenerating this page never resets the source time. Data sources and methodology

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