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Air quality in Waltham
Air quality index (AQI) and PM2.5 air pollution in Waltham
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Waltham Air Quality Map
Real-time Waltham air pollution map
AIR QUALITY DATA SOURCE
* AQI modeled using satellite data Learn more
Pollen
What is the pollen count in Waltham today?
 | Index | Very high | |
 | Tree pollen | Very high | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Waltham?
| Weather | Clear sky |
| Temperature | 78.8°F |
| Humidity | 26% |
| Wind | 10.4 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Channelview, Texas | 88 |
| 2 | San Bernardino, California | 87 |
| 3 | Boerne, Texas | 82 |
| 4 | Pasadena, Texas | 82 |
| 5 | Baytown, Texas | 81 |
| 6 | Fontana, California | 81 |
| 7 | Galena Park, Texas | 81 |
| 8 | San Antonio, Texas | 81 |
| 9 | Yucaipa, California | 79 |
| 10 | Pahrump, Nevada | 77 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
US AQI
23
live AQI index
Good
Overview
What is the current air quality in Waltham?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 23 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.2µg/m³ | |
✓
PM2.5 concentration in Waltham air currently meets the WHO annual air quality guideline value
Health Recommendations
What is the current air quality in Waltham?
 | Enjoy outdoor activities |
 | Open your windows to bring clean, fresh air indoors GET A MONITOR |
Forecast
Waltham air quality index (AQI) forecast
| Day | Pollution level | Weather | Temperature | Wind |
|---|---|---|---|---|
| Wednesday, May 29 | Good 16 AQI US |  | 60.8° 50° |  8.9 mp/h |
| Thursday, May 30 | Good 24 AQI US |  | 71.6° 48.2° | 6.7 mp/h |
| Friday, May 31 | Good 26 AQI US | | 78.8° 51.8° | 6.7 mp/h |
| Today | Good 23 AQI US | | 78.8° 51.8° | 6.7 mp/h |
| Sunday, Jun 2 | Good 43 AQI US |  | 82.4° 50° | 6.7 mp/h |
| Monday, Jun 3 | Moderate 57 AQI US  | | 69.8° 57.2° | 8.9 mp/h |
| Tuesday, Jun 4 | Good 46 AQI US | | 71.6° 55.4° | 6.7 mp/h |
| Wednesday, Jun 5 | Good 31 AQI US | | 73.4° 57.2° | 8.9 mp/h |
| Thursday, Jun 6 | Good 28 AQI US | | 73.4° 57.2° | 8.9 mp/h |
| Friday, Jun 7 | Good 22 AQI US | | 78.8° 59° | 6.7 mp/h |
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News
The latest air quality news and resources.
How to best protect from air pollution?
Where is the cleanest air quality in Waltham?
No locations are available.
AQI US, Metric