During a night filled of bonfires around the country in celebration of the Lag B'omer holiday, air pollution jumped in many places, according to the Environmental Protection Ministry.
Readings were taken from cities that have existing air-quality monitors and thus focused mainly on the urban cities in the country's center.
In measurements of course particulate matter in the air (between 2.5 and 10 micrometers in diameter), Ashkelon saw the biggest jump with levels 6.9 times higher than normal. Rehovot came in second place, with levels that were 5.2 times higher. In Jerusalem's Baka neighborhood, the levels were 2.6 times higher than normal.
Afula, the northernmost city on the list saw levels 3.8 percent higher than usual, with a concentration of 229 micrograms per micrometer For fine particulate matter (under 2.5 micrometers in diameter), Haifa's Kiryat Haim neighborhood had the biggest jump, with levels 11.8 times higher than on a regular day. In second place was northern Ashdod, where levels were 10.2 times higher.