AirNow city forecasts

Toronto Modeled Air Quality — CAMS Forecast

Canada · America/Toronto

Data state: FRESH; source age at generation: 15.3 hours.

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CAMS modeled concentrations

PollutantConcentrationSurface compatibility
CO288.9 µg/m³DERIVABLE_SURFACE
NO220.9 µg/m³DERIVABLE_SURFACE
O377.2 µg/m³DERIVABLE_SURFACE
PM1011.6 µg/m³DIRECT_SURFACE
PM2.511.6 µg/m³DIRECT_SURFACE
SO24.9 µg/m³DERIVABLE_SURFACE

Model initialization: . Valid: . Retrieved: 2026-10-01T12:51:43.243843+00:00.

Nearest valid 0.4° model grid cell; gases use matching model-level 137 temperature, humidity, lnsp and hybrid coefficients. This global model does not resolve street-level exposure.

CAMS model-based US AQI estimate

51 COMPLETE

Window ending 2026-10-01T15:00:00+00:00; window model run 2026-09-30T12:00:00+00:00. Contributors: co, no2, o3, pm10, pm2_5, so2.

Experimental trailing model estimate using EPA May 2026 breakpoints. Not a station observation, official daily maximum, or NowCast. Partial estimates do not imply six-pollutant completeness.

CAMS modeled PM2.5 forecast (µg/m³)Actual model samples spaced by their valid times. Range 3.4 to 13.3. Forecast, not observations.2026-10-01T16:00:00+00:002026-10-02T15:00:00+00:00
CAMS modeled PM2.5 forecast (µg/m³) · 3.4–13.3; actual sample times, no interpolated hourly values.

Modeled concentration forecast

Forecast table model initialization 2026-10-01T00:00:00+00:00. Actual hourly model samples; no interpolation.

Local timePM2.5 µg/m³PM10 µg/m³O3 µg/m³NO2 µg/m³SO2 µg/m³CO µg/m³
Oct 01 12:00 EDT11.9 12.0 78.4 20.3 5.2 286.1
Oct 01 13:00 EDT12.1 12.2 76.6 19.7 5.2 285.0
Oct 01 14:00 EDT12.0 12.0 75.9 19.1 5.1 288.5
Oct 01 15:00 EDT11.8 11.9 75.2 20.7 5.0 299.4
Oct 01 16:00 EDT12.2 12.3 80.0 21.5 5.1 308.9
Oct 01 17:00 EDT12.8 12.8 80.7 25.3 5.3 328.0
Oct 01 18:00 EDT13.3 13.3 78.5 31.4 5.2 368.2
Oct 01 19:00 EDT13.0 13.0 82.6 33.7 5.2 390.6
Oct 01 20:00 EDT11.3 11.4 92.3 27.6 4.9 360.9
Oct 01 21:00 EDT9.5 9.6 100.8 19.9 4.3 311.4
Oct 01 22:00 EDT10.1 10.2 98.4 18.8 4.3 299.9
Oct 01 23:00 EDT10.5 10.6 94.2 17.5 4.1 285.1
Oct 02 00:00 EDT9.6 9.7 87.9 16.0 3.8 267.0
Oct 02 01:00 EDT8.4 8.5 77.9 15.6 3.6 258.7
Oct 02 02:00 EDT7.0 7.0 65.4 15.9 3.7 256.8
Oct 02 03:00 EDT5.3 5.3 54.3 14.9 3.6 256.0
Oct 02 04:00 EDT3.8 3.8 47.3 13.3 3.5 251.9
Oct 02 05:00 EDT3.4 3.4 44.1 11.6 3.5 241.9
Oct 02 06:00 EDT4.1 4.3 45.8 10.1 3.4 221.8
Oct 02 07:00 EDT5.1 5.3 47.7 10.3 3.8 200.7
Oct 02 08:00 EDT5.7 5.9 47.4 13.8 4.4 193.2
Oct 02 09:00 EDT5.8 5.9 44.0 18.1 4.8 205.9
Oct 02 10:00 EDT5.6 5.7 41.0 20.4 5.2 216.3
Oct 02 11:00 EDT5.0 5.2 44.4 16.8 5.4 206.7

Source and license

Contains modified Copernicus Atmosphere Monitoring Service information 2026; city extraction and concentration conversion. CC BY 4.0.

Weather and air quality preserve independent provider timestamps.