Add
Hourly forecast
331-379 US-20, Waltham air quality index (AQI⁺) forecast
Daily forecast
331-379 US-20, Waltham air quality index (AQI⁺) forecast
| Today | 52 |  | 18° 10° |  17 km/h |  86% |
| Sat | 22 |  | 10° 6° | 16 km/h | 90% |
| Sun | 23 | | 10° 6° | 17 km/h | 85% |
Air pollutants
What is the current air quality near 331-379 US-20?
PM2.5 concentration is currently 2.3 times the World Health Organization annual PM2.5 guideline value.
Health recommendations
 Sensitive groups should reduce outdoor exercise |
 Close your windows to avoid dirty outdoor air Get a monitor |
 Sensitive groups should wear a mask outdoors Get a mask |
 Sensitive groups should run an air purifier Get an air purifier |
Real-time 331-379 US-20, Waltham air pollution map
Pollen
What is the pollen count in 331-379 US-20 today?
Index
Low
 Tree Low | 25% |
 Grass None | 0% |
 Weed None | 0% |
Source:
wetter.comPollen
What is the pollen count in 331-379 US-20 today?
Index
Low
Tree Low | 25% |
Grass None | 0% |
Weed None | 0% |
Source:
wetter.comHistoric air quality near 331-379 US-20
History
Historic air quality graph for 331-379 US-20
Measure your own air quality
Get a monitor and contribute air quality data in your city.
Most polluted locations near 331-379 US-20, Waltham
Worldwide AQI⁺ ranking
Station ranking
Real-time 331-379 US-20 AQI⁺ station ranking
Get comprehensive data about air quality in 331-379 US-20, Waltham
Download our Air Quality App
