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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 CONTRIBUTORS
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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 | 44.6°F |
| Humidity | 67% |
| Wind | 4.6 mp/h |
| Pressure | 30.4 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 | Boerne, Texas | 98 |
| 2 | San Antonio, Texas | 95 |
| 3 | Georgetown, Texas | 93 |
| 4 | Lewisville, Texas | 92 |
| 5 | Fort Worth, Texas | 88 |
| 6 | Leander, Texas | 88 |
| 7 | Austin, Texas | 87 |
| 8 | Round Rock, Texas | 87 |
| 9 | Midlothian, Texas | 81 |
| 10 | Denton, Texas | 79 |
(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 | 15 |
(local time)
SEE WORLD AQI RANKING
US AQI
15
live AQI index
Good
Overview
What is the current air quality in Waltham?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 15 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 3.5µg/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, Apr 24 | Good 15 AQI US | | 55.4° 32° |  8.9 mp/h |
| Thursday, Apr 25 | Good 18 AQI US | | 57.2° 33.8° | 6.7 mp/h |
| Friday, Apr 26 | Good 14 AQI US |  | 66.2° 37.4° | 8.9 mp/h |
| Today | Good 15 AQI US | | 66.2° 37.4° | 8.9 mp/h |
| Sunday, Apr 28 | Good 22 AQI US |  90% | 64.4° 44.6° | 6.7 mp/h |
| Monday, Apr 29 | Good 41 AQI US | 100% | 68° 51.8° | 6.7 mp/h |
| Tuesday, Apr 30 | Good 29 AQI US | 90% | 53.6° 44.6° | 6.7 mp/h |
| Wednesday, May 1 | Good 27 AQI US | 80% | 59° 44.6° | 2.2 mp/h |
| Thursday, May 2 | Good 47 AQI US | | 64.4° 46.4° | 4.5 mp/h |
| Friday, May 3 | Moderate 59 AQI US  | | 71.6° 46.4° | 11.2 mp/h |
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News
The latest air quality news and resources.
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