AirNow by Skymory

Eritrea · Africa/Asmara

Asmara air quality

56

Moderate

CAMS model-based US AQI estimate

Highest pollutant sub-index: PM2.5

Model values for Oct 02 10:00 EAT · 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 particles11.7 µg/m³
  • PM10Coarse particles39.3 µg/m³
  • O3Ozone78.8 µg/m³
  • NO2Nitrogen dioxide0.2 µg/m³
  • SO2Sulphur dioxide1.4 µg/m³
  • COCarbon monoxide102.4 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 12.7. Forecast, not observations.Oct 02 11:00 EATOct 03 10:00 EAT
Modeled PM2.5 forecast (µg/m³) · 10.2–12.7; 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
11.639.878.90.21.3101.7
11.539.978.80.11.2100.7
11.739.678.70.21.299.2
12.440.678.70.21.297.6
12.738.978.40.21.296.3
12.335.176.90.31.195.1
12.032.976.80.31.193.5
11.729.574.50.51.192.8
11.223.967.01.01.195.7
11.321.959.61.61.1100.0
11.420.852.82.11.2103.9
11.521.351.12.21.2103.9
11.822.350.42.31.3103.2
11.321.648.82.31.2101.3
10.619.645.02.51.1101.3
10.721.546.12.31.199.7
10.320.745.62.51.099.8
10.220.945.72.50.899.0
10.422.146.42.40.798.7
10.623.547.62.50.599.1
10.823.346.52.30.5104.0
11.030.463.30.60.598.0
11.936.971.40.21.198.8
11.936.872.40.11.698.8
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 EAT. 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 21 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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