AQHI now · Ottawa
All cities →1.8
Low health risk
Observed Thu 4:00 PM · Ottawa
- Today
- 2 Low risk
- Tonight
- 2 Low risk
- Tomorrow
- 2 Low risk
- Tomorrow night
- 2 Low risk
Environment and Climate Change Canada · forecast issued Thu 5:00 PM
Health advice now
- People at risk
- Enjoy your usual outdoor activities.
- Everyone else
- Ideal air quality for outdoor activities.
Pollutants now
PM2.52.7 µg/m³WHO guideline 15
PM102.7 µg/m³WHO guideline 45
NO₂10 µg/m³WHO guideline 25
O₃50 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Ottawa
TreesNonenone in the air
GrassLow<1 grains/m³
WeedsLow<1 grains/m³ · Ragweed
Fri: weeds low · Sat: weeds low · Sun: weeds low
Model estimate from WeatherAPI.com — pollen grains per m³ of air; levels on the National Allergy Bureau scale.
Model estimate from WeatherAPI.com — pollen grains per m³ of air; levels on the National Allergy Bureau scale.
Particles · next 12 hours
µg/m³| Time | PM2.5 | PM10 |
|---|---|---|
| 5 PM | 2.7 | 2.7 |
| 6 PM | 3.1 | 3.2 |
| 7 PM | 3.5 | 3.5 |
| 8 PM | 3.8 | 3.8 |
| 9 PM | 4.4 | 4.4 |
| 10 PM | 4.5 | 4.6 |
| 11 PM | 4.7 | 4.7 |
| 12 AM | 5.1 | 5.2 |
| 1 AM | 5.7 | 5.8 |
| 2 AM | 6.4 | 6.4 |
| 3 AM | 7.1 | 7.1 |
| 4 AM | 7.6 | 7.7 |