AQHI now · Ottawa South
All cities →1.6
Low health risk
Observed Thu 5:00 PM · Ottawa
- 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
PM2.53.7 µg/m³WHO guideline 15
PM103.8 µg/m³WHO guideline 45
NO₂13 µg/m³WHO guideline 25
O₃68 µg/m³WHO guideline 100
Model estimates from WeatherAPI.com; WHO 24-hour guidelines (8-hour for ozone).
Pollen today · Ottawa South
TreesNonenone in the air
GrassModerate11 grains/m³
WeedsHigh137 grains/m³ · Ragweed
Fri: weeds high · Sat: weeds high · Sun: weeds high
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 |
|---|---|---|
| 6 PM | 3.7 | 3.8 |
| 7 PM | 6.3 | 6.3 |
| 8 PM | 9.5 | 9.6 |
| 9 PM | 11.8 | 11.8 |
| 10 PM | 12.6 | 12.7 |
| 11 PM | 13.2 | 13.3 |
| 12 AM | 13.2 | 13.3 |
| 1 AM | 12.2 | 12.2 |
| 2 AM | 9.4 | 9.5 |
| 3 AM | 5.6 | 5.7 |
| 4 AM | 3.4 | 3.5 |
| 5 AM | 2.4 | 2.5 |