AirNow by Skymory

Yemen · Asia/Aden

Sanaa air quality

58

Moderate

CAMS model-based US AQI estimate

Highest pollutant sub-index: PM2.5

Model values for Oct 02 10:00 +03 · 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 particles12.1 µg/m³
  • PM10Coarse particles69.6 µg/m³
  • O3Ozone71.0 µg/m³
  • NO2Nitrogen dioxide0.1 µg/m³
  • SO2Sulphur dioxide1.1 µg/m³
  • COCarbon monoxide98.0 µg/m³

Next 24 hours: PM2.5

Modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 10.2 to 12.3. Forecast, not observations.Oct 02 11:00 +03Oct 03 10:00 +03
Modeled PM2.5 forecast (µg/m³) · 10.2–12.3; 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
12.371.770.70.11.097.5
12.169.170.40.11.096.7
11.764.670.50.11.096.0
11.459.770.50.11.095.5
10.955.270.70.11.095.1
10.551.270.90.11.094.9
10.348.470.70.11.094.9
10.245.369.40.11.095.4
10.444.767.90.21.196.0
10.442.265.60.31.197.0
10.740.962.70.51.298.4
11.041.259.70.81.299.8
11.341.156.51.01.3101.0
11.540.252.51.21.2102.2
11.940.148.71.61.3103.3
12.139.544.61.91.3104.4
12.038.641.32.21.3105.1
11.939.141.42.21.3105.2
11.939.542.92.11.3105.0
11.938.543.72.01.5106.2
11.935.244.41.51.7109.6
11.339.658.90.51.399.9
11.846.364.20.11.094.5
12.249.465.10.10.992.8
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 10:00 +03. Retrieved: 2026-10-02T04:41:30.698644+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 27 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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