Free climate snapshot
Heat and air quality in Ontario
A free, state-level snapshot of the last decade, measured around Toronto. For your own ZIP or postal code — with hazard-day counts and the representatives responsible — run a $2 report.
Extreme heat
| Year | Avg daily high (°F) | Days ≥ 90°F | Days ≥ 95°F |
|---|---|---|---|
| 2016 | 56.6 | 1 | 0 |
| 2017 | 55.9 | 0 | 0 |
| 2018 | 55.4 | 1 | 0 |
| 2019 | 54.3 | 1 | 0 |
| 2020 | 56.8 | 3 | 0 |
| 2021 | 57.5 | 0 | 0 |
| 2022 | 55.5 | 1 | 0 |
| 2023 | 56.8 | 0 | 0 |
| 2024 | 57.7 | 0 | 0 |
| 2025 | 55.2 | 5 | 2 |
Air quality
Air quality data is still being compiled for this region.
This page covers Ontario as a whole. A $2 report covers your exact location: hazard-day counts, the data center projects within 100 miles, and contact details for your federal, state/provincial, and local representatives.
Run a report for my locationData center projects in Ontario →
Trends are modeled from Open-Meteo historical reanalysis (ERA5-Land) and represent the area around the requested location, not a single station.