Hourly regulatory PM2.5 observations from Ontario Ministry of the Environment.
The latest hourly PM2.5 reading is 12.0 µg/m³. The 12-hour NowCast is 12.5 µg/m³ (Moderate).
The monitor belongs to Ontario Ministry of the Environment. Real-time readings are preliminary and may be revised.
The air-quality category applies to the NowCast, not to a single hourly reading. Methodology and source policy.
No active incidents are reported within 150 km.
No out of control fires are reported within 150 km.
No being held fires are reported within 150 km.
No under control fires are reported within 150 km.
Proximity and wind direction do not prove that a fire caused smoke at this location. Sources: BC Wildfire Service in British Columbia; Natural Resources Canada CWFIS elsewhere.
Background bands (US EPA AQI, 24-h basis): ■ Good · ■ Moderate
| Model | Peak | Time |
|---|---|---|
| FireSmoke | 5.4 µg/m³ | Sep 02, 3:00PM |
| FireWork | 10.9 µg/m³ | Sep 03, 1:00AM |
| HRRR | 0.9 µg/m³ | Sep 02, 1:00PM |
Regulatory monitor
Hourly observations are supplied by Ontario Ministry of the Environment. Real-time data are preliminary and may be revised by the agency.
For information only — not a substitute for official health or emergency advice. Methodology and source policy.