AddAir quality in Waltham
Air quality index (AQI⁺) and PM2.5 air pollution in Waltham • 9.1K Followers • 09:00, Apr 17 Local time
66
US AQI⁺Moderate
Main pollutant:
PM2.5
17.1 µg/m³
12°
4 km/h
92 %
Hourly forecast
Waltham air quality index (AQI⁺) forecast
Daily forecast
Waltham air quality index (AQI⁺) forecast
| Today | 60 | | 19° 11° |  17 km/h | 86% |
| Sat | 22 |  | 10° 6° | 16 km/h | 90% |
| Sun | 23 | | 11° 6° | 17 km/h | 85% |
Air pollutants
What is the current air quality in Waltham?
PM2.5 concentration is currently 3.4 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 |
Pollen
What is the pollen count in Waltham today?
Index
Low
 Tree Low | 25% |
 Grass None | 0% |
 Weed None | 0% |
Source:
wetter.comHealth 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 |
Pollen
What is the pollen count in Waltham today?
Index
Low
Tree Low | 25% |
Grass None | 0% |
Weed None | 0% |
Source:
wetter.comMost polluted locations near Waltham
Worldwide AQI⁺ ranking
Station ranking
Real-time AQI⁺ station ranking for stations in Waltham
Historic air quality near Waltham
History
Historic air quality graph for Waltham
Historic air quality near Waltham
History
Historic air quality graph for Waltham
Most polluted locations near Waltham
Worldwide AQI⁺ rankingStation ranking
Real-time AQI⁺ station ranking for stations in Waltham
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