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 Castle Rock
Air quality index (AQI) and PM2.5 air pollution in Castle Rock
25K people follow this city
Castle Rock Air Quality Map
Real-time Castle Rock air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
See all
Pollen
What is the pollen count in Castle Rock today?
 | Index | Low | |
 | Tree pollen | Low | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Castle Rock?
| Weather | Broken clouds |
| Temperature | 59°F |
| Humidity | 49% |
| Wind | 8 mp/h |
| Pressure | 29.8 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Georgetown, Texas | 88 |
| 2 | Mecca, California | 86 |
| 3 | Leander, Texas | 84 |
| 4 | Austin, Texas | 82 |
| 5 | Round Rock, Texas | 82 |
| 6 | Cedar Park, Texas | 81 |
| 7 | Ocala, Florida | 74 |
| 8 | Campo, California | 71 |
| 9 | Palm Desert, California | 69 |
| 10 | Pahrump, Nevada | 66 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Castle Rock aqi ranking
Real-time Castle Rock air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Ditmars Trail | 22 |
| 2 | Stone Canon Ranch Road | 17 |
(local time)
SEE WORLD AQI RANKING
US AQI
20
live AQI index
Good
Overview
What is the current air quality in Castle Rock?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 20 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.6µg/m³ | |
✓
PM2.5 concentration in Castle Rock air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Castle Rock?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Castle Rock air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 25 AQI US |  | 69.8° 46.4° |  13.4 mp/h |
| Thursday, May 30 | Good 29 AQI US | | 69.8° 44.6° | 8.9 mp/h |
| Friday, May 31 | Good 34 AQI US | | 75.2° 48.2° | 8.9 mp/h |
| Today | Good 20 AQI US | | 80.6° 46.4° | 13.4 mp/h |
| Sunday, Jun 2 | Moderate 57 AQI US  |  | 78.8° 51.8° | 6.7 mp/h |
| Monday, Jun 3 | Good 27 AQI US | | 77° 53.6° | 8.9 mp/h |
| Tuesday, Jun 4 | Good 15 AQI US |  | 84.2° 53.6° | 8.9 mp/h |
| Wednesday, Jun 5 | Good 20 AQI US | 40% | 82.4° 51.8° | 13.4 mp/h |
| Thursday, Jun 6 | Good 21 AQI US | 80% | 84.2° 57.2° | 13.4 mp/h |
| Friday, Jun 7 | Good 31 AQI US | 100% | 73.4° 55.4° | 13.4 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Castle Rock air quality data attribution
2Contributors
- 2 Anonymous contributors
2 stations
2 Anonymous Contributors
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Castle Rock?
AQI US, Metric