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
779 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 |
Source: tomorrow.io
Weather
What is the current weather in Foothill Ranch?
| Weather | Few clouds |
| Temperature | 69.8°F |
| Humidity | 68% |
| Wind | 11.5 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Hollywood, California | 84 |
| 2 | Glendora, California | 77 |
| 3 | San Fernando, California | 74 |
| 4 | La Crescenta-Montrose, California | 71 |
| 5 | Three Rivers, California | 71 |
| 6 | Sierra Madre, California | 69 |
| 7 | Yucaipa, California | 69 |
| 8 | Altadena, California | 68 |
| 9 | Claremont, California | 68 |
| 10 | La Verne, California | 68 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
61*
live AQI index
Moderate
Overview
What is the current air quality in Foothill Ranch?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Moderate | 61* US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 14.6*µg/m³ | |
!
PM2.5
x2.9
PM2.5 concentration in Foothill Ranch is currently 2.9 times the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Foothill Ranch?
 | Sensitive groups should reduce outdoor exercise |
 | Close your windows to avoid dirty outdoor air GET A MONITOR |
 | Sensitive groups should wear a mask outdoors GET A MASK |
 | Sensitive groups should run an air purifier GET AN AIR PURIFIER |
Forecast
Foothill Ranch air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Today | Moderate 61 AQI US |  | 71.6° 53.6° |  6.7 mp/h |
| Saturday, Jun 1 | Moderate 61 AQI US | | 71.6° 53.6° | 6.7 mp/h |
| Sunday, Jun 2 | Moderate 57 AQI US | | 73.4° 55.4° | 6.7 mp/h |
| Monday, Jun 3 | Moderate 62 AQI US |  | 77° 57.2° | 6.7 mp/h |
| Tuesday, Jun 4 | Moderate 72 AQI US | | 78.8° 59° | 6.7 mp/h |
| Wednesday, Jun 5 | Moderate 75 AQI US | | 80.6° 60.8° | 8.9 mp/h |
| Thursday, Jun 6 | Moderate 75 AQI US | | 78.8° 60.8° | 6.7 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Foothill Ranch?
No locations are available.
AQI US, Metric