Get a monitor and contributor to air quality data in your city.
Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Air quality in Diamond Bar
Air quality index (AQI) and PM2.5 air pollution in Diamond Bar
1.1K people follow this city
Diamond Bar Air Quality Map
Real-time Diamond Bar air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
See all
Pollen
What is the pollen count in Diamond Bar today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Diamond Bar?
| Weather | Mist |
| Temperature | 57.2°F |
| Humidity | 88% |
| Wind | 6.9 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Mecca, California | 93 |
| 2 | Corpus Christi, Texas | 89 |
| 3 | Pahrump, Nevada | 86 |
| 4 | Palm Desert, California | 86 |
| 5 | Rancho Cucamonga, California | 73 |
| 6 | Glendora, California | 71 |
| 7 | Claremont, California | 70 |
| 8 | Oak Hills, California | 69 |
| 9 | Yucaipa, California | 69 |
| 10 | Fontana, California | 67 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Diamond Bar aqi ranking
Real-time Diamond Bar air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | North Diamond Bar Boulevard | 60 |
| 2 | Tolani Court | 36 |
| 3 | Valley Vista Drive | 27 |
| 4 | Autumnglow Drive | 26 |
| 5 | Valley Vista Drive SCFLX_01 | 26 |
(local time)
SEE WORLD AQI RANKING
US AQI
27
live AQI index
Good
Overview
What is the current air quality in Diamond Bar?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 27 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5µg/m³ | |
✓
PM2.5 concentration in Diamond Bar air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Diamond Bar?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Diamond Bar air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Thursday, May 30 | Good 46 AQI US |  | 75.2° 57.2° |  8.9 mp/h |
| Friday, May 31 | Good 32 AQI US | | 75.2° 57.2° | 11.2 mp/h |
| Saturday, Jun 1 | Good 27 AQI US | | 77° 57.2° | 8.9 mp/h |
| Today | Good 27 AQI US | | 77° 57.2° | 8.9 mp/h |
| Monday, Jun 3 | Moderate 60 AQI US  |  | 78.8° 59° | 8.9 mp/h |
| Tuesday, Jun 4 | Moderate 61 AQI US | | 84.2° 62.6° | 11.2 mp/h |
| Wednesday, Jun 5 | Moderate 66 AQI US | | 84.2° 64.4° | 8.9 mp/h |
| Thursday, Jun 6 | Moderate 74 AQI US | | 86° 64.4° | 8.9 mp/h |
| Friday, Jun 7 | Moderate 75 AQI US | | 87.8° 66.2° | 11.2 mp/h |
| Saturday, Jun 8 | Moderate 76 AQI US | | 82.4° 64.4° | 11.2 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Diamond Bar air quality data attribution
5Contributors
- 5 Anonymous contributors
5 stations
5 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Diamond Bar?
AQI US, Metric