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 Waltham
Air quality index (AQI) and PM2.5 air pollution in Waltham
544 people follow this city
Waltham Air Quality Map
Real-time Waltham air pollution map
AIR QUALITY DATA CONTRIBUTORS
Anonymous contributor
See all
Pollen
What is the pollen count in Waltham today?
 | Index | Moderate | |
 | Tree pollen | Moderate | |
 | Grass pollen | Low | |
 | Weed pollen | None |
Source: tomorrow.io
Weather
What is the current weather in Waltham?
| Weather | Broken clouds |
| Temperature | 64.4°F |
| Humidity | 87% |
| Wind | 8.1 mp/h |
| Pressure | 29.9 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Georgetown, Texas | 111 |
| 2 | Leander, Texas | 109 |
| 3 | Boerne, Texas | 107 |
| 4 | Little Rock, Arkansas | 106 |
| 5 | Round Rock, Texas | 105 |
| 6 | Midlothian, Texas | 98 |
| 7 | San Antonio, Texas | 96 |
| 8 | Austin, Texas | 95 |
| 9 | New Braunfels, Texas | 94 |
| 10 | Shreveport, Louisiana | 93 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
live Waltham aqi ranking
Real-time Waltham air quality ranking
| # | station | US AQI |
|---|---|---|
| 1 | Brandeis University | 27 |
(local time)
SEE WORLD AQI RANKING
US AQI
27
live AQI index
Good
Overview
What is the current air quality in Waltham?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 27 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 4.9µg/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 |
|---|---|---|---|---|
| Friday, May 24 | Good 20 AQI US | | 77° 55.4° |  4.5 mp/h |
| Saturday, May 25 | Good 42 AQI US |  | 78.8° 59° | 4.5 mp/h |
| Sunday, May 26 | Good 47 AQI US | | 71.6° 59° | 13.4 mp/h |
| Today | Good 27 AQI US | 90% | 71.6° 59° | 13.4 mp/h |
| Tuesday, May 28 | Moderate 51 AQI US  | 100% | 82.4° 62.6° | 11.2 mp/h |
| Wednesday, May 29 | Good 45 AQI US | | 69.8° 55.4° | 13.4 mp/h |
| Thursday, May 30 | Good 22 AQI US | | 73.4° 50° | 6.7 mp/h |
| Friday, May 31 | Good 15 AQI US | | 69.8° 46.4° | 6.7 mp/h |
| Saturday, Jun 1 | Good 17 AQI US |  | 71.6° 50° | 6.7 mp/h |
| Sunday, Jun 2 | Good 13 AQI US |  | 68° 46.4° | 8.9 mp/h |
Interested in hourly forecast? Get the app
News
The latest air quality news and resources.
How to best protect from air pollution?
Waltham air quality data attribution
1Contributor
- 1 Anonymous contributor
1 station
Anonymous Contributor
1 Data source
Data validated and calibrated by IQAirWhere is the cleanest air quality in Waltham?
AQI US, Metric