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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 | 69.8°F |
| Humidity | 43% |
| Wind | 6.9 mp/h |
| Pressure | 30 Hg |
live aqi city ranking
Real-time USA city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Glendora, California | 83 |
| 2 | Altadena, California | 79 |
| 3 | La Crescenta-Montrose, California | 77 |
| 4 | San Fernando, California | 77 |
| 5 | Pasadena, California | 76 |
| 6 | Monrovia, California | 74 |
| 7 | North Hollywood, California | 74 |
| 8 | Sierra Madre, California | 74 |
| 9 | Glendale, California | 73 |
| 10 | La Canada Flintridge, California | 73 |
(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 | 32 |
(local time)
SEE WORLD AQI RANKING
US AQI
32
live AQI index
Good
Overview
What is the current air quality in Waltham?
| Air pollution level | Air quality index | Main pollutant |
|---|---|---|
| Good | 32 US AQI | PM2.5 |
| Pollutants | Concentration | |
|---|---|---|
| PM2.5 | 5.8µg/m³ | |
!
PM2.5
x1.2
PM2.5 concentration in Waltham is currently 1.2 times 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 |
|---|---|---|---|---|
| Tuesday, May 28 | Good 18 AQI US | | 75.2° 55.4° |  6.7 mp/h |
| 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 |
| Thursday, May 30 | Good 17 AQI US | | 71.6° 48.2° | 6.7 mp/h |
| Today | Good 32 AQI US | | 78.8° 50° | 6.7 mp/h |
| Saturday, Jun 1 | Good 43 AQI US | | 80.6° 50° | 4.5 mp/h |
| Sunday, Jun 2 | Moderate 57 AQI US  | | 77° 57.2° | 8.9 mp/h |
| Monday, Jun 3 | Good 44 AQI US | | 71.6° 53.6° | 6.7 mp/h |
| Tuesday, Jun 4 | Good 31 AQI US | | 75.2° 51.8° | 6.7 mp/h |
| Wednesday, Jun 5 | Good 28 AQI US | 100% | 71.6° 51.8° | 8.9 mp/h |
| Thursday, Jun 6 | Good 22 AQI US | 100% | 78.8° 57.2° | 11.2 mp/h |
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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