AirNow by Skymory

China · Asia/Shanghai

Tianjin air quality

145

Unhealthy for sensitive groups

CAMS model-based US AQI estimate

Highest pollutant sub-index: PM2.5

Model values for Oct 02 15:00 CST · 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 particles28.7 µg/m³
  • PM10Coarse particles52.2 µg/m³
  • O3Ozone45.6 µg/m³
  • NO2Nitrogen dioxide46.4 µg/m³
  • SO2Sulphur dioxide15.3 µg/m³
  • COCarbon monoxide495.4 µg/m³

Next 24 hours: PM2.5

Modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 27.8 to 45.2. Forecast, not observations.Oct 02 16:00 CSTOct 03 15:00 CST
Modeled PM2.5 forecast (µg/m³) · 27.8–45.2; 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
28.351.043.348.714.1475.7
29.150.232.756.713.1485.1
40.156.24.080.213.8644.8
45.159.00.281.515.1711.8
44.057.30.678.615.2687.0
43.757.41.376.214.9651.1
45.259.21.875.214.8636.1
45.059.22.675.313.9613.7
41.555.65.375.212.1546.4
37.650.910.472.810.7476.7
34.346.718.665.09.8428.4
31.343.222.258.89.5404.4
28.940.619.956.69.6400.8
27.839.313.658.010.4416.3
29.140.37.160.211.9462.3
37.248.09.753.914.9596.6
44.954.612.049.218.2762.3
44.455.716.247.520.7767.5
43.557.221.047.222.1730.9
40.957.631.243.919.5619.2
36.253.152.234.014.5484.8
32.547.272.525.311.5413.8
30.443.185.221.810.0381.0
29.040.094.220.38.9357.5
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 15:00 CST. Retrieved: 2026-10-02T04:57:48.491181+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 7 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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