Air Quality 
Air Monitors
Air Purifiers
For Business
News
Support
Pollen count and allergy info for Napa
Napa pollen and allergy report
Today's Pollen Count in 1991 St Helena Highway
Very high
Air quality
Air quality of 1991 St Helena Highway today
| AQI US AQI | Good | |
| PM2.5 µg/m³ | Good |
3D animated air pollution map
Allergy forecast
1991 St Helena Highway pollen count forecast
| Day | Index | Tree | Grass | Weed | Wind | Weather | Temperature |
|---|---|---|---|---|---|---|---|
| Thursday, May 4 | N/A | N/A | N/A | N/A |  8.9 mp/h |  50% | 57.2° 44.6° |
| Friday, May 5 | N/A | N/A | N/A | N/A | 11.2 mp/h | 90% | 60.8° 42.8° |
| Saturday, May 6 | N/A | N/A | N/A | N/A | 8.9 mp/h |  | 64.4° 41° |
AQI US, Metric