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
Heat data is still being compiled for this region.
Air quality
| Year | PM2.5 (µg/m³) | Ozone | NO₂ |
|---|---|---|---|
| 2022 | 11.2 | 59.060 | 19.1 |
| 2023 | 14.8 | 64.570 | 20.5 |
| 2024 | 10.6 | 66.850 | 17.1 |
| 2025 | 10.6 | 71.370 | 16.8 |
| 2026 | 11.3 | 65.230 | 19.3 |
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 →
Nearest station coverage within 200 km; gaps filled from Open-Meteo CAMS modeled reanalysis.