Be the first to measure and contribute air quality data to your community
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Foothill Ranch
Air quality index (AQI) and PM2.5 air pollution in Foothill Ranch
748 people follow this city
Foothill Ranch Air Quality Map
Real-time Foothill Ranch air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Foothill Ranch today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | None | |
 | Weed pollen | None |
Weather
What is the current weather in Foothill Ranch?
| Weather | Scattered clouds |
| Temperature | 66.2°F |
| Humidity | 62% |
| Wind | 9.2 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | San Bernardino, California | 88 |
| 2 | Yucaipa, California | 85 |
| 3 | Anchorage, Alaska | 82 |
| 4 | Redlands, California | 79 |
| 5 | Corpus Christi, Texas | 76 |
| 6 | Fontana, California | 72 |
| 7 | Visalia, California | 72 |
| 8 | Glendale, California | 71 |
| 9 | La Crescenta-Montrose, California | 71 |
| 10 | San Fernando, California | 71 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
Spotlight
Rubidoux has "Unhealthy for Sensitive Groups" air quality. See the map and health recommendations.
US AQI
34*
live AQI index
Good
Overview
What is the current air quality in Foothill Ranch?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 34* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 8.2*µg/m³ | |
!
PM2.5
x1.6
PM2.5 concentration in Foothill Ranch is currently 1.6 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Foothill Ranch?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Foothill Ranch air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Good 34 AQI US | | 66.2° 51.8° |  6.7 mp/h |
| Saturday, Apr 20 | Good 38 AQI US |  | 69.8° 51.8° | 6.7 mp/h |
| Sunday, Apr 21 | Good 40 AQI US | | 75.2° 57.2° | 6.7 mp/h |
| Monday, Apr 22 | Good 50 AQI US |  | 71.6° 55.4° | 6.7 mp/h |
| Tuesday, Apr 23 | Good 22 AQI US | | 66.2° 53.6° | 8.9 mp/h |
| Wednesday, Apr 24 | Good 14 AQI US | | 62.6° 51.8° | 8.9 mp/h |
| Thursday, Apr 25 | Good 18 AQI US | | 64.4° 50° | 6.7 mp/h |
| Friday, Apr 26 | Good 17 AQI US | | 60.8° 51.8° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
Where is the cleanest air quality in Foothill Ranch?
No locations are available.
AQI US, Metric