Worst air pollution Williams Lake, today and tomorrow
Today (15 July): Air quality in Williams Lake is fair. PM2.5 and O3 are fair; AQI and NO2 are medium; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (NO2: 44.3/100).
Tomorrow (16 July 2026): Air quality in Williams Lake is fair. All pollutants stay as today. Pollution peaks around 5:00 PM (NO2: 54.9/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Williams Lake's air quality is affected by sawmill operations and summer wildfire smoke, both common to this Cariboo forestry town, with winter inversions trapping woodsmoke in the valley bowl.
Today - 15 July | Pollution peaks at 17:00
AQI:
Medium
44.3/100
PM2.5 (fine particles):
Fair
20.4/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Medium
44.3/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
11.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
14.6/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 17:00
AQI:
Medium
54.9/100
PM2.5 (fine particles):
Fair
21.7/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Medium
54.9/100
O3 (ozone):
Fair
31.6/100
SO2 (sulfur dioxide):
Good
17.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Good
19.8/100
Pollen forecast in Williams Lake
View pollen forecastFrequently Asked Questions
Is air quality bad in Williams Lake right now?
On 15 July 2026, overall air quality in Williams Lake is fair. O3 is the main pollutant at 30.4/100. Pollution peaks around 5:00 PM (NO2: 44.3/100).
Will air quality be worse tomorrow in Williams Lake?
On 16 July 2026, air quality conditions in Williams Lake will be similar to today, with O3 forecast at fair at 31.6/100. Pollution peaks around 5:00 PM (NO2: 54.9/100).
When is air pollution at its worst in Williams Lake?
Williams Lake's air quality follows a seasonal rhythm tied to its position amid the forestry mills of the Cariboo region. Air quality is generally very good outside of wildfire season, though hot, dry summers can bring smoky, hazy stretches when fires burn across the wider region. Local monitoring stations often see their highest readings of the year during major regional fire events.
Are air quality levels in Williams Lake based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app