How accurate is the forecast for Markham?

Forecasts are pulled from leading meteorological models and refreshed automatically every 30 minutes. Short-range accuracy (next 24 hours) is typically within 1–2°C and 80–90% for precipitation.

How often is the data updated?

Current conditions and the hourly outlook refresh every 30 minutes; daily forecasts every hour.

What does the air-quality (AQI) value mean?

We display the European AQI on a scale from Good (0–20) to Extremely poor (>100), blending PM2.5, PM10, NO₂ and O₃.

Clima Map

No forecast for that date yet.

Nearby weather

Cities near Markham

Compare weather conditions in surrounding cities and open any local forecast instantly.

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Weather notice Forecasts are for general planning. During severe weather, follow official alerts and local authority instructions.