WildfireSmokeCanada

Sault Ste Marie

Hourly regulatory PM2.5 observations from Ontario Ministry of the Environment.

Ontario · 46.5332, -84.3099 · Updated Oct 15, 2026, 12:28AM EDT · Regulatory monitor
3.0Latest hourly PM2.5 · µg/m³Oct 15, 12:00AM EDT · Preliminary observation
2.412-hour NowCast · µg/m³Good
GoodModel peak · next 24 h0–4 µg/m³ · 3 models available
1AQHI
AQHI context

What this monitor reports

The latest hourly PM2.5 reading is 3.0 µg/m³. The 12-hour NowCast is 2.4 µg/m³ (Good).

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.

Nearby fires

150 km radius

Fire snapshot updated 2026-10-15 04:20 UTC

Within 150 km, agencies report 1 Out of control.

Out of control1 fire
WAW_FIRE_035
83 km away · 6.5 ha · reported 2026-10-12 · ON
distance measured to the incident point
Out of control
Being held0 fires

No being held fires are reported within 150 km.

Under control0 fires

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.

Recent observations and next 48 hours

monitor + up to three models
20100now−24 h+24 h+48 hµg/m³

Background bands (US EPA AQI, 24-h basis): ■ Good · ■ Moderate

Forecast at this monitor

NEXT 6 HOURS
Good
0–2 µg/m³ · Oct 15, 7:00AM
NEXT 12 HOURS
Good
0–4 µg/m³ · Oct 15, 9:00AM
NEXT 24 HOURS
Good
0–4 µg/m³ · Oct 15, 9:00AM
NEXT 48 HOURS
Good
0–4 µg/m³ · Oct 15, 9:00AM
Model detail3 models available · 48-hour peak table
ModelPeakTime
FireSmoke0.2 µg/m³Oct 15, 4:00PM
FireWork4.3 µg/m³Oct 15, 9:00AM
HRRR0.1 µg/m³Oct 15, 8:00AM

Nearby regulatory monitors

in the same province or territory

Source and data quality

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.